diff --git a/src/index.rs b/src/index.rs
deleted file mode 100644
index ee31a62..0000000
--- a/src/index.rs
+++ /dev/null
@@ -1,817 +0,0 @@
-use anyhow::*;
-use core::ops::Deref;
-use diesel;
-use diesel::dsl::sql;
-use diesel::prelude::*;
-use diesel::sql_types;
-#[cfg(feature = "profile-index")]
-use flame;
-use log::{error, info};
-use regex::Regex;
-use serde::{Deserialize, Serialize};
-use std::fs;
-use std::path::Path;
-#[cfg(test)]
-use std::path::PathBuf;
-use std::sync::mpsc::*;
-use std::sync::{Arc, Mutex};
-use std::thread;
-use std::time;
-
-use crate::config::MiscSettings;
-#[cfg(test)]
-use crate::db;
-use crate::db::{directories, misc_settings, songs, DB};
-use crate::metadata;
-use crate::vfs::{VFSSource, VFS};
-
-const INDEX_BUILDING_INSERT_BUFFER_SIZE: usize = 1000; // Insertions in each transaction
-const INDEX_BUILDING_CLEAN_BUFFER_SIZE: usize = 500; // Insertions in each transaction
-
-no_arg_sql_function!(
-	random,
-	sql_types::Integer,
-	"Represents the SQL RANDOM() function"
-);
-
-enum Command {
-	REINDEX,
-	EXIT,
-}
-
-struct CommandReceiver {
-	receiver: Receiver<Command>,
-}
-
-impl CommandReceiver {
-	fn new(receiver: Receiver<Command>) -> CommandReceiver {
-		CommandReceiver { receiver }
-	}
-}
-
-pub struct CommandSender {
-	sender: Mutex<Sender<Command>>,
-}
-
-impl CommandSender {
-	fn new(sender: Sender<Command>) -> CommandSender {
-		CommandSender {
-			sender: Mutex::new(sender),
-		}
-	}
-
-	pub fn trigger_reindex(&self) -> Result<()> {
-		let sender = self.sender.lock().unwrap();
-		match sender.send(Command::REINDEX) {
-			Ok(_) => Ok(()),
-			Err(_) => bail!("Trigger reindex channel error"),
-		}
-	}
-
-	#[allow(dead_code)]
-	pub fn exit(&self) -> Result<()> {
-		let sender = self.sender.lock().unwrap();
-		match sender.send(Command::EXIT) {
-			Ok(_) => Ok(()),
-			Err(_) => bail!("Index exit channel error"),
-		}
-	}
-}
-
-pub fn init(db: DB) -> Arc<CommandSender> {
-	let (index_sender, index_receiver) = channel();
-	let command_sender = Arc::new(CommandSender::new(index_sender));
-	let command_receiver = CommandReceiver::new(index_receiver);
-
-	// Start update loop
-	std::thread::spawn(move || {
-		update_loop(&db, &command_receiver);
-	});
-
-	command_sender
-}
-
-#[derive(Debug, PartialEq, Queryable, QueryableByName, Serialize, Deserialize)]
-#[table_name = "songs"]
-pub struct Song {
-	#[serde(skip_serializing, skip_deserializing)]
-	id: i32,
-	pub path: String,
-	#[serde(skip_serializing, skip_deserializing)]
-	pub parent: String,
-	pub track_number: Option<i32>,
-	pub disc_number: Option<i32>,
-	pub title: Option<String>,
-	pub artist: Option<String>,
-	pub album_artist: Option<String>,
-	pub year: Option<i32>,
-	pub album: Option<String>,
-	pub artwork: Option<String>,
-	pub duration: Option<i32>,
-}
-
-#[derive(Debug, PartialEq, Queryable, Serialize, Deserialize)]
-pub struct Directory {
-	#[serde(skip_serializing, skip_deserializing)]
-	id: i32,
-	pub path: String,
-	#[serde(skip_serializing, skip_deserializing)]
-	pub parent: Option<String>,
-	pub artist: Option<String>,
-	pub year: Option<i32>,
-	pub album: Option<String>,
-	pub artwork: Option<String>,
-	pub date_added: i32,
-}
-
-#[derive(Debug, PartialEq, Serialize, Deserialize)]
-pub enum CollectionFile {
-	Directory(Directory),
-	Song(Song),
-}
-
-#[derive(Debug, Insertable)]
-#[table_name = "songs"]
-struct NewSong {
-	path: String,
-	parent: String,
-	track_number: Option<i32>,
-	disc_number: Option<i32>,
-	title: Option<String>,
-	artist: Option<String>,
-	album_artist: Option<String>,
-	year: Option<i32>,
-	album: Option<String>,
-	artwork: Option<String>,
-	duration: Option<i32>,
-}
-
-#[derive(Debug, Insertable)]
-#[table_name = "directories"]
-struct NewDirectory {
-	path: String,
-	parent: Option<String>,
-	artist: Option<String>,
-	year: Option<i32>,
-	album: Option<String>,
-	artwork: Option<String>,
-	date_added: i32,
-}
-
-struct IndexBuilder {
-	new_songs: Vec<NewSong>,
-	new_directories: Vec<NewDirectory>,
-	db: DB,
-	album_art_pattern: Regex,
-}
-
-impl IndexBuilder {
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn new(db: DB, album_art_pattern: Regex) -> Result<IndexBuilder> {
-		let mut new_songs = Vec::new();
-		let mut new_directories = Vec::new();
-		new_songs.reserve_exact(INDEX_BUILDING_INSERT_BUFFER_SIZE);
-		new_directories.reserve_exact(INDEX_BUILDING_INSERT_BUFFER_SIZE);
-		Ok(IndexBuilder {
-			new_songs,
-			new_directories,
-			db,
-			album_art_pattern,
-		})
-	}
-
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn flush_songs(&mut self) -> Result<()> {
-		let connection = self.db.connect()?;
-		diesel::insert_into(songs::table)
-			.values(&self.new_songs)
-			.execute(&*connection)?; // TODO https://github.com/diesel-rs/diesel/issues/1822
-		self.new_songs.clear();
-		Ok(())
-	}
-
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn flush_directories(&mut self) -> Result<()> {
-		let connection = self.db.connect()?;
-		diesel::insert_into(directories::table)
-			.values(&self.new_directories)
-			.execute(&*connection)?; // TODO https://github.com/diesel-rs/diesel/issues/1822
-		self.new_directories.clear();
-		Ok(())
-	}
-
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn push_song(&mut self, song: NewSong) -> Result<()> {
-		if self.new_songs.len() >= self.new_songs.capacity() {
-			self.flush_songs()?;
-		}
-		self.new_songs.push(song);
-		Ok(())
-	}
-
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn push_directory(&mut self, directory: NewDirectory) -> Result<()> {
-		if self.new_directories.len() >= self.new_directories.capacity() {
-			self.flush_directories()?;
-		}
-		self.new_directories.push(directory);
-		Ok(())
-	}
-
-	fn get_artwork(&self, dir: &Path) -> Result<Option<String>> {
-		for file in fs::read_dir(dir)? {
-			let file = file?;
-			if let Some(name_string) = file.file_name().to_str() {
-				if self.album_art_pattern.is_match(name_string) {
-					return Ok(file.path().to_str().map(|p| p.to_owned()));
-				}
-			}
-		}
-		Ok(None)
-	}
-
-	#[cfg_attr(feature = "profile-index", flame)]
-	fn populate_directory(&mut self, parent: Option<&Path>, path: &Path) -> Result<()> {
-		// Find artwork
-		let artwork = self.get_artwork(path).unwrap_or(None);
-
-		// Extract path and parent path
-		let parent_string = parent.and_then(|p| p.to_str()).map(|s| s.to_owned());
-		let path_string = path.to_str().ok_or(anyhow!("Invalid directory path"))?;
-
-		// Find date added
-		let metadata = fs::metadata(path_string)?;
-		let created = metadata
-			.created()
-			.or_else(|_| metadata.modified())?
-			.duration_since(time::UNIX_EPOCH)?
-			.as_secs() as i32;
-
-		let mut directory_album = None;
-		let mut directory_year = None;
-		let mut directory_artist = None;
-		let mut inconsistent_directory_album = false;
-		let mut inconsistent_directory_year = false;
-		let mut inconsistent_directory_artist = false;
-
-		// Sub directories
-		let mut sub_directories = Vec::new();
-
-		// Insert content
-		for file in fs::read_dir(path)? {
-			#[cfg(feature = "profile-index")]
-			let _guard = flame::start_guard("directory-entry");
-			let file_path = match file {
-				Ok(ref f) => f.path(),
-				_ => {
-					error!("File read error within {}", path_string);
-					break;
-				}
-			};
-
-			if file_path.is_dir() {
-				sub_directories.push(file_path.to_path_buf());
-				continue;
-			}
-
-			if let Some(file_path_string) = file_path.to_str() {
-				if let Ok(tags) = metadata::read(file_path.as_path()) {
-					if tags.year.is_some() {
-						inconsistent_directory_year |=
-							directory_year.is_some() && directory_year != tags.year;
-						directory_year = tags.year;
-					}
-
-					if tags.album.is_some() {
-						inconsistent_directory_album |=
-							directory_album.is_some() && directory_album != tags.album;
-						directory_album = tags.album.as_ref().cloned();
-					}
-
-					if tags.album_artist.is_some() {
-						inconsistent_directory_artist |=
-							directory_artist.is_some() && directory_artist != tags.album_artist;
-						directory_artist = tags.album_artist.as_ref().cloned();
-					} else if tags.artist.is_some() {
-						inconsistent_directory_artist |=
-							directory_artist.is_some() && directory_artist != tags.artist;
-						directory_artist = tags.artist.as_ref().cloned();
-					}
-
-					let song = NewSong {
-						path: file_path_string.to_owned(),
-						parent: path_string.to_owned(),
-						disc_number: tags.disc_number.map(|n| n as i32),
-						track_number: tags.track_number.map(|n| n as i32),
-						title: tags.title,
-						duration: tags.duration.map(|n| n as i32),
-						artist: tags.artist,
-						album_artist: tags.album_artist,
-						album: tags.album,
-						year: tags.year,
-						artwork: artwork.as_ref().cloned(),
-					};
-
-					self.push_song(song)?;
-				}
-			}
-		}
-
-		// Insert directory
-		if inconsistent_directory_year {
-			directory_year = None;
-		}
-		if inconsistent_directory_album {
-			directory_album = None;
-		}
-		if inconsistent_directory_artist {
-			directory_artist = None;
-		}
-
-		let directory = NewDirectory {
-			path: path_string.to_owned(),
-			parent: parent_string,
-			artwork,
-			album: directory_album,
-			artist: directory_artist,
-			year: directory_year,
-			date_added: created,
-		};
-		self.push_directory(directory)?;
-
-		// Populate subdirectories
-		for sub_directory in sub_directories {
-			self.populate_directory(Some(path), &sub_directory)?;
-		}
-
-		Ok(())
-	}
-}
-
-#[cfg_attr(feature = "profile-index", flame)]
-fn clean(db: &DB) -> Result<()> {
-	let vfs = db.get_vfs()?;
-
-	{
-		let all_songs: Vec<String>;
-		{
-			let connection = db.connect()?;
-			all_songs = songs::table.select(songs::path).load(&connection)?;
-		}
-
-		let missing_songs = all_songs
-			.into_iter()
-			.filter(|ref song_path| {
-				let path = Path::new(&song_path);
-				!path.exists() || vfs.real_to_virtual(path).is_err()
-			})
-			.collect::<Vec<_>>();
-
-		{
-			let connection = db.connect()?;
-			for chunk in missing_songs[..].chunks(INDEX_BUILDING_CLEAN_BUFFER_SIZE) {
-				diesel::delete(songs::table.filter(songs::path.eq_any(chunk)))
-					.execute(&connection)?;
-			}
-		}
-	}
-
-	{
-		let all_directories: Vec<String>;
-		{
-			let connection = db.connect()?;
-			all_directories = directories::table
-				.select(directories::path)
-				.load(&connection)?;
-		}
-
-		let missing_directories = all_directories
-			.into_iter()
-			.filter(|ref directory_path| {
-				let path = Path::new(&directory_path);
-				!path.exists() || vfs.real_to_virtual(path).is_err()
-			})
-			.collect::<Vec<_>>();
-
-		{
-			let connection = db.connect()?;
-			for chunk in missing_directories[..].chunks(INDEX_BUILDING_CLEAN_BUFFER_SIZE) {
-				diesel::delete(directories::table.filter(directories::path.eq_any(chunk)))
-					.execute(&connection)?;
-			}
-		}
-	}
-
-	Ok(())
-}
-
-#[cfg_attr(feature = "profile-index", flame)]
-fn populate(db: &DB) -> Result<()> {
-	let vfs = db.get_vfs()?;
-	let mount_points = vfs.get_mount_points();
-
-	let album_art_pattern;
-	{
-		let connection = db.connect()?;
-		let settings: MiscSettings = misc_settings::table.get_result(&connection)?;
-		album_art_pattern = Regex::new(&settings.index_album_art_pattern)?;
-	}
-
-	let mut builder = IndexBuilder::new(db.clone(), album_art_pattern)?;
-	for target in mount_points.values() {
-		builder.populate_directory(None, target.as_path())?;
-	}
-	builder.flush_songs()?;
-	builder.flush_directories()?;
-	Ok(())
-}
-
-pub fn update(db: &DB) -> Result<()> {
-	let start = time::Instant::now();
-	info!("Beginning library index update");
-	clean(db)?;
-	populate(db)?;
-	info!(
-		"Library index update took {} seconds",
-		start.elapsed().as_secs()
-	);
-	#[cfg(feature = "profile-index")]
-	flame::dump_html(&mut fs::File::create("index-flame-graph.html").unwrap()).unwrap();
-	Ok(())
-}
-
-fn update_loop(db: &DB, command_buffer: &CommandReceiver) {
-	loop {
-		// Wait for a command
-		if command_buffer.receiver.recv().is_err() {
-			return;
-		}
-
-		// Flush the buffer to ignore spammy requests
-		loop {
-			match command_buffer.receiver.try_recv() {
-				Err(TryRecvError::Disconnected) => return,
-				Ok(Command::EXIT) => return,
-				Err(TryRecvError::Empty) => break,
-				Ok(_) => (),
-			}
-		}
-
-		// Do the update
-		if let Err(e) = update(db) {
-			error!("Error while updating index: {}", e);
-		}
-	}
-}
-
-pub fn self_trigger(db: &DB, command_buffer: &Arc<CommandSender>) {
-	loop {
-		{
-			let command_buffer = command_buffer.deref();
-			if let Err(e) = command_buffer.trigger_reindex() {
-				error!("Error while writing to index command buffer: {}", e);
-				return;
-			}
-		}
-		let sleep_duration = {
-			let connection = db.connect();
-			connection
-				.and_then(|c| {
-					misc_settings::table
-						.get_result(&c)
-						.map_err(|e| Error::new(e))
-				})
-				.map(|s: MiscSettings| s.index_sleep_duration_seconds)
-				.unwrap_or_else(|e| {
-					error!("Could not retrieve index sleep duration: {}", e);
-					1800
-				})
-		};
-		thread::sleep(time::Duration::from_secs(sleep_duration as u64));
-	}
-}
-
-#[cfg_attr(feature = "profile-index", flame)]
-pub fn virtualize_song(vfs: &VFS, mut song: Song) -> Option<Song> {
-	song.path = match vfs.real_to_virtual(Path::new(&song.path)) {
-		Ok(p) => p.to_string_lossy().into_owned(),
-		_ => return None,
-	};
-	if let Some(artwork_path) = song.artwork {
-		song.artwork = match vfs.real_to_virtual(Path::new(&artwork_path)) {
-			Ok(p) => Some(p.to_string_lossy().into_owned()),
-			_ => None,
-		};
-	}
-	Some(song)
-}
-
-#[cfg_attr(feature = "profile-index", flame)]
-fn virtualize_directory(vfs: &VFS, mut directory: Directory) -> Option<Directory> {
-	directory.path = match vfs.real_to_virtual(Path::new(&directory.path)) {
-		Ok(p) => p.to_string_lossy().into_owned(),
-		_ => return None,
-	};
-	if let Some(artwork_path) = directory.artwork {
-		directory.artwork = match vfs.real_to_virtual(Path::new(&artwork_path)) {
-			Ok(p) => Some(p.to_string_lossy().into_owned()),
-			_ => None,
-		};
-	}
-	Some(directory)
-}
-
-pub fn browse<P>(db: &DB, virtual_path: P) -> Result<Vec<CollectionFile>>
-where
-	P: AsRef<Path>,
-{
-	let mut output = Vec::new();
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-
-	if virtual_path.as_ref().components().count() == 0 {
-		// Browse top-level
-		let real_directories: Vec<Directory> = directories::table
-			.filter(directories::parent.is_null())
-			.load(&connection)?;
-		let virtual_directories = real_directories
-			.into_iter()
-			.filter_map(|s| virtualize_directory(&vfs, s));
-		output.extend(virtual_directories.map(CollectionFile::Directory));
-	} else {
-		// Browse sub-directory
-		let real_path = vfs.virtual_to_real(virtual_path)?;
-		let real_path_string = real_path.as_path().to_string_lossy().into_owned();
-
-		let real_directories: Vec<Directory> = directories::table
-			.filter(directories::parent.eq(&real_path_string))
-			.order(sql::<sql_types::Bool>("path COLLATE NOCASE ASC"))
-			.load(&connection)?;
-		let virtual_directories = real_directories
-			.into_iter()
-			.filter_map(|s| virtualize_directory(&vfs, s));
-		output.extend(virtual_directories.map(CollectionFile::Directory));
-
-		let real_songs: Vec<Song> = songs::table
-			.filter(songs::parent.eq(&real_path_string))
-			.order(sql::<sql_types::Bool>("path COLLATE NOCASE ASC"))
-			.load(&connection)?;
-		let virtual_songs = real_songs
-			.into_iter()
-			.filter_map(|s| virtualize_song(&vfs, s));
-		output.extend(virtual_songs.map(CollectionFile::Song));
-	}
-
-	Ok(output)
-}
-
-pub fn flatten<P>(db: &DB, virtual_path: P) -> Result<Vec<Song>>
-where
-	P: AsRef<Path>,
-{
-	use self::songs::dsl::*;
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-
-	let real_songs: Vec<Song> = if virtual_path.as_ref().parent() != None {
-		let real_path = vfs.virtual_to_real(virtual_path)?;
-		let like_path = real_path.as_path().to_string_lossy().into_owned() + "%";
-		songs
-			.filter(path.like(&like_path))
-			.order(path)
-			.load(&connection)?
-	} else {
-		songs.order(path).load(&connection)?
-	};
-
-	let virtual_songs = real_songs
-		.into_iter()
-		.filter_map(|s| virtualize_song(&vfs, s));
-	Ok(virtual_songs.collect::<Vec<_>>())
-}
-
-pub fn get_random_albums(db: &DB, count: i64) -> Result<Vec<Directory>> {
-	use self::directories::dsl::*;
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-	let real_directories = directories
-		.filter(album.is_not_null())
-		.limit(count)
-		.order(random)
-		.load(&connection)?;
-	let virtual_directories = real_directories
-		.into_iter()
-		.filter_map(|s| virtualize_directory(&vfs, s));
-	Ok(virtual_directories.collect::<Vec<_>>())
-}
-
-pub fn get_recent_albums(db: &DB, count: i64) -> Result<Vec<Directory>> {
-	use self::directories::dsl::*;
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-	let real_directories: Vec<Directory> = directories
-		.filter(album.is_not_null())
-		.order(date_added.desc())
-		.limit(count)
-		.load(&connection)?;
-	let virtual_directories = real_directories
-		.into_iter()
-		.filter_map(|s| virtualize_directory(&vfs, s));
-	Ok(virtual_directories.collect::<Vec<_>>())
-}
-
-pub fn search(db: &DB, query: &str) -> Result<Vec<CollectionFile>> {
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-	let like_test = format!("%{}%", query);
-	let mut output = Vec::new();
-
-	// Find dirs with matching path and parent not matching
-	{
-		use self::directories::dsl::*;
-		let real_directories: Vec<Directory> = directories
-			.filter(path.like(&like_test))
-			.filter(parent.not_like(&like_test))
-			.load(&connection)?;
-
-		let virtual_directories = real_directories
-			.into_iter()
-			.filter_map(|s| virtualize_directory(&vfs, s));
-
-		output.extend(virtual_directories.map(CollectionFile::Directory));
-	}
-
-	// Find songs with matching title/album/artist and non-matching parent
-	{
-		use self::songs::dsl::*;
-		let real_songs: Vec<Song> = songs
-			.filter(
-				path.like(&like_test)
-					.or(title.like(&like_test))
-					.or(album.like(&like_test))
-					.or(artist.like(&like_test))
-					.or(album_artist.like(&like_test)),
-			)
-			.filter(parent.not_like(&like_test))
-			.load(&connection)?;
-
-		let virtual_songs = real_songs
-			.into_iter()
-			.filter_map(|s| virtualize_song(&vfs, s));
-
-		output.extend(virtual_songs.map(CollectionFile::Song));
-	}
-
-	Ok(output)
-}
-
-pub fn get_song(db: &DB, virtual_path: &Path) -> Result<Song> {
-	let vfs = db.get_vfs()?;
-	let connection = db.connect()?;
-	let real_path = vfs.virtual_to_real(virtual_path)?;
-	let real_path_string = real_path.as_path().to_string_lossy();
-
-	use self::songs::dsl::*;
-	let real_song: Song = songs
-		.filter(path.eq(real_path_string))
-		.get_result(&connection)?;
-
-	match virtualize_song(&vfs, real_song) {
-		Some(s) => Ok(s),
-		_ => bail!("Missing VFS mapping"),
-	}
-}
-
-#[test]
-fn test_populate() {
-	let db = db::get_test_db("populate.sqlite");
-	update(&db).unwrap();
-	update(&db).unwrap(); // Check that subsequent updates don't run into conflicts
-
-	let connection = db.connect().unwrap();
-	let all_directories: Vec<Directory> = directories::table.load(&connection).unwrap();
-	let all_songs: Vec<Song> = songs::table.load(&connection).unwrap();
-	assert_eq!(all_directories.len(), 5);
-	assert_eq!(all_songs.len(), 12);
-}
-
-#[test]
-fn test_metadata() {
-	let mut target = PathBuf::new();
-	target.push("test");
-	target.push("collection");
-	target.push("Tobokegao");
-	target.push("Picnic");
-
-	let mut song_path = target.clone();
-	song_path.push("05 - シャーベット (Sherbet).mp3");
-
-	let mut artwork_path = target.clone();
-	artwork_path.push("Folder.png");
-
-	let db = db::get_test_db("metadata.sqlite");
-	update(&db).unwrap();
-
-	let connection = db.connect().unwrap();
-	let songs: Vec<Song> = songs::table
-		.filter(songs::title.eq("シャーベット (Sherbet)"))
-		.load(&connection)
-		.unwrap();
-
-	assert_eq!(songs.len(), 1);
-	let song = &songs[0];
-	assert_eq!(song.path, song_path.to_string_lossy().as_ref());
-	assert_eq!(song.track_number, Some(5));
-	assert_eq!(song.disc_number, None);
-	assert_eq!(song.title, Some("シャーベット (Sherbet)".to_owned()));
-	assert_eq!(song.artist, Some("Tobokegao".to_owned()));
-	assert_eq!(song.album_artist, None);
-	assert_eq!(song.album, Some("Picnic".to_owned()));
-	assert_eq!(song.year, Some(2016));
-	assert_eq!(
-		song.artwork,
-		Some(artwork_path.to_string_lossy().into_owned())
-	);
-}
-
-#[test]
-fn test_browse_top_level() {
-	let mut root_path = PathBuf::new();
-	root_path.push("root");
-
-	let db = db::get_test_db("browse_top_level.sqlite");
-	update(&db).unwrap();
-	let results = browse(&db, Path::new("")).unwrap();
-
-	assert_eq!(results.len(), 1);
-	match results[0] {
-		CollectionFile::Directory(ref d) => assert_eq!(d.path, root_path.to_str().unwrap()),
-		_ => panic!("Expected directory"),
-	}
-}
-
-#[test]
-fn test_browse() {
-	let mut khemmis_path = PathBuf::new();
-	khemmis_path.push("root");
-	khemmis_path.push("Khemmis");
-
-	let mut tobokegao_path = PathBuf::new();
-	tobokegao_path.push("root");
-	tobokegao_path.push("Tobokegao");
-
-	let db = db::get_test_db("browse.sqlite");
-	update(&db).unwrap();
-	let results = browse(&db, Path::new("root")).unwrap();
-
-	assert_eq!(results.len(), 2);
-	match results[0] {
-		CollectionFile::Directory(ref d) => assert_eq!(d.path, khemmis_path.to_str().unwrap()),
-		_ => panic!("Expected directory"),
-	}
-	match results[1] {
-		CollectionFile::Directory(ref d) => assert_eq!(d.path, tobokegao_path.to_str().unwrap()),
-		_ => panic!("Expected directory"),
-	}
-}
-
-#[test]
-fn test_flatten() {
-	let db = db::get_test_db("flatten.sqlite");
-	update(&db).unwrap();
-	let results = flatten(&db, Path::new("root")).unwrap();
-	assert_eq!(results.len(), 12);
-	assert_eq!(results[0].title, Some("Above The Water".to_owned()));
-}
-
-#[test]
-fn test_random() {
-	let db = db::get_test_db("random.sqlite");
-	update(&db).unwrap();
-	let results = get_random_albums(&db, 1).unwrap();
-	assert_eq!(results.len(), 1);
-}
-
-#[test]
-fn test_recent() {
-	let db = db::get_test_db("recent.sqlite");
-	update(&db).unwrap();
-	let results = get_recent_albums(&db, 2).unwrap();
-	assert_eq!(results.len(), 2);
-	assert!(results[0].date_added >= results[1].date_added);
-}
-
-#[test]
-fn test_get_song() {
-	let db = db::get_test_db("get_song.sqlite");
-	update(&db).unwrap();
-
-	let mut song_path = PathBuf::new();
-	song_path.push("root");
-	song_path.push("Khemmis");
-	song_path.push("Hunted");
-	song_path.push("02 - Candlelight.mp3");
-
-	let song = get_song(&db, &song_path).unwrap();
-	assert_eq!(song.title.unwrap(), "Candlelight");
-}
diff --git a/src/index/mod.rs b/src/index/mod.rs
new file mode 100644
index 0000000..565b89e
--- /dev/null
+++ b/src/index/mod.rs
@@ -0,0 +1,148 @@
+use anyhow::*;
+use core::ops::Deref;
+use diesel;
+use diesel::prelude::*;
+#[cfg(feature = "profile-index")]
+use flame;
+use log::{error, info};
+use std::path::Path;
+use std::sync::mpsc::*;
+use std::sync::{Arc, Mutex};
+use std::thread;
+use std::time;
+
+use crate::config::MiscSettings;
+use crate::db::{directories, misc_settings, songs, DB};
+use crate::vfs::VFS;
+
+mod populate;
+mod query;
+#[cfg(test)]
+mod test;
+mod types;
+
+pub use self::populate::*;
+pub use self::query::*;
+pub use self::types::*;
+
+enum Command {
+	REINDEX,
+	EXIT,
+}
+
+struct CommandReceiver {
+	receiver: Receiver<Command>,
+}
+
+impl CommandReceiver {
+	fn new(receiver: Receiver<Command>) -> CommandReceiver {
+		CommandReceiver { receiver }
+	}
+}
+
+pub struct CommandSender {
+	sender: Mutex<Sender<Command>>,
+}
+
+impl CommandSender {
+	fn new(sender: Sender<Command>) -> CommandSender {
+		CommandSender {
+			sender: Mutex::new(sender),
+		}
+	}
+
+	pub fn trigger_reindex(&self) -> Result<()> {
+		let sender = self.sender.lock().unwrap();
+		match sender.send(Command::REINDEX) {
+			Ok(_) => Ok(()),
+			Err(_) => bail!("Trigger reindex channel error"),
+		}
+	}
+
+	#[allow(dead_code)]
+	pub fn exit(&self) -> Result<()> {
+		let sender = self.sender.lock().unwrap();
+		match sender.send(Command::EXIT) {
+			Ok(_) => Ok(()),
+			Err(_) => bail!("Index exit channel error"),
+		}
+	}
+}
+
+pub fn init(db: DB) -> Arc<CommandSender> {
+	let (index_sender, index_receiver) = channel();
+	let command_sender = Arc::new(CommandSender::new(index_sender));
+	let command_receiver = CommandReceiver::new(index_receiver);
+
+	// Start update loop
+	std::thread::spawn(move || {
+		update_loop(&db, &command_receiver);
+	});
+
+	command_sender
+}
+
+pub fn update(db: &DB) -> Result<()> {
+	let start = time::Instant::now();
+	info!("Beginning library index update");
+	clean(db)?;
+	populate(db)?;
+	info!(
+		"Library index update took {} seconds",
+		start.elapsed().as_secs()
+	);
+	#[cfg(feature = "profile-index")]
+	flame::dump_html(&mut fs::File::create("index-flame-graph.html").unwrap()).unwrap();
+	Ok(())
+}
+
+fn update_loop(db: &DB, command_buffer: &CommandReceiver) {
+	loop {
+		// Wait for a command
+		if command_buffer.receiver.recv().is_err() {
+			return;
+		}
+
+		// Flush the buffer to ignore spammy requests
+		loop {
+			match command_buffer.receiver.try_recv() {
+				Err(TryRecvError::Disconnected) => return,
+				Ok(Command::EXIT) => return,
+				Err(TryRecvError::Empty) => break,
+				Ok(_) => (),
+			}
+		}
+
+		// Do the update
+		if let Err(e) = update(db) {
+			error!("Error while updating index: {}", e);
+		}
+	}
+}
+
+pub fn self_trigger(db: &DB, command_buffer: &Arc<CommandSender>) {
+	loop {
+		{
+			let command_buffer = command_buffer.deref();
+			if let Err(e) = command_buffer.trigger_reindex() {
+				error!("Error while writing to index command buffer: {}", e);
+				return;
+			}
+		}
+		let sleep_duration = {
+			let connection = db.connect();
+			connection
+				.and_then(|c| {
+					misc_settings::table
+						.get_result(&c)
+						.map_err(|e| Error::new(e))
+				})
+				.map(|s: MiscSettings| s.index_sleep_duration_seconds)
+				.unwrap_or_else(|e| {
+					error!("Could not retrieve index sleep duration: {}", e);
+					1800
+				})
+		};
+		thread::sleep(time::Duration::from_secs(sleep_duration as u64));
+	}
+}
diff --git a/src/index/populate.rs b/src/index/populate.rs
new file mode 100644
index 0000000..64e58bd
--- /dev/null
+++ b/src/index/populate.rs
@@ -0,0 +1,314 @@
+use anyhow::*;
+use diesel;
+use diesel::prelude::*;
+#[cfg(feature = "profile-index")]
+use flame;
+use log::{error};
+use regex::Regex;
+use std::fs;
+use std::path::Path;
+use std::time;
+
+use crate::config::MiscSettings;
+use crate::db::{directories, misc_settings, songs, DB};
+use crate::metadata;
+use crate::vfs::VFSSource;
+
+const INDEX_BUILDING_INSERT_BUFFER_SIZE: usize = 1000; // Insertions in each transaction
+const INDEX_BUILDING_CLEAN_BUFFER_SIZE: usize = 500; // Insertions in each transaction
+
+#[derive(Debug, Insertable)]
+#[table_name = "songs"]
+struct NewSong {
+	path: String,
+	parent: String,
+	track_number: Option<i32>,
+	disc_number: Option<i32>,
+	title: Option<String>,
+	artist: Option<String>,
+	album_artist: Option<String>,
+	year: Option<i32>,
+	album: Option<String>,
+	artwork: Option<String>,
+	duration: Option<i32>,
+}
+
+#[derive(Debug, Insertable)]
+#[table_name = "directories"]
+struct NewDirectory {
+	path: String,
+	parent: Option<String>,
+	artist: Option<String>,
+	year: Option<i32>,
+	album: Option<String>,
+	artwork: Option<String>,
+	date_added: i32,
+}
+
+struct IndexBuilder {
+	new_songs: Vec<NewSong>,
+	new_directories: Vec<NewDirectory>,
+	db: DB,
+	album_art_pattern: Regex,
+}
+
+impl IndexBuilder {
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn new(db: DB, album_art_pattern: Regex) -> Result<IndexBuilder> {
+		let mut new_songs = Vec::new();
+		let mut new_directories = Vec::new();
+		new_songs.reserve_exact(INDEX_BUILDING_INSERT_BUFFER_SIZE);
+		new_directories.reserve_exact(INDEX_BUILDING_INSERT_BUFFER_SIZE);
+		Ok(IndexBuilder {
+			new_songs,
+			new_directories,
+			db,
+			album_art_pattern,
+		})
+	}
+
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn flush_songs(&mut self) -> Result<()> {
+		let connection = self.db.connect()?;
+		diesel::insert_into(songs::table)
+			.values(&self.new_songs)
+			.execute(&*connection)?; // TODO https://github.com/diesel-rs/diesel/issues/1822
+		self.new_songs.clear();
+		Ok(())
+	}
+
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn flush_directories(&mut self) -> Result<()> {
+		let connection = self.db.connect()?;
+		diesel::insert_into(directories::table)
+			.values(&self.new_directories)
+			.execute(&*connection)?; // TODO https://github.com/diesel-rs/diesel/issues/1822
+		self.new_directories.clear();
+		Ok(())
+	}
+
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn push_song(&mut self, song: NewSong) -> Result<()> {
+		if self.new_songs.len() >= self.new_songs.capacity() {
+			self.flush_songs()?;
+		}
+		self.new_songs.push(song);
+		Ok(())
+	}
+
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn push_directory(&mut self, directory: NewDirectory) -> Result<()> {
+		if self.new_directories.len() >= self.new_directories.capacity() {
+			self.flush_directories()?;
+		}
+		self.new_directories.push(directory);
+		Ok(())
+	}
+
+	fn get_artwork(&self, dir: &Path) -> Result<Option<String>> {
+		for file in fs::read_dir(dir)? {
+			let file = file?;
+			if let Some(name_string) = file.file_name().to_str() {
+				if self.album_art_pattern.is_match(name_string) {
+					return Ok(file.path().to_str().map(|p| p.to_owned()));
+				}
+			}
+		}
+		Ok(None)
+	}
+
+	#[cfg_attr(feature = "profile-index", flame)]
+	fn populate_directory(&mut self, parent: Option<&Path>, path: &Path) -> Result<()> {
+		// Find artwork
+		let artwork = self.get_artwork(path).unwrap_or(None);
+
+		// Extract path and parent path
+		let parent_string = parent.and_then(|p| p.to_str()).map(|s| s.to_owned());
+		let path_string = path.to_str().ok_or(anyhow!("Invalid directory path"))?;
+
+		// Find date added
+		let metadata = fs::metadata(path_string)?;
+		let created = metadata
+			.created()
+			.or_else(|_| metadata.modified())?
+			.duration_since(time::UNIX_EPOCH)?
+			.as_secs() as i32;
+
+		let mut directory_album = None;
+		let mut directory_year = None;
+		let mut directory_artist = None;
+		let mut inconsistent_directory_album = false;
+		let mut inconsistent_directory_year = false;
+		let mut inconsistent_directory_artist = false;
+
+		// Sub directories
+		let mut sub_directories = Vec::new();
+
+		// Insert content
+		for file in fs::read_dir(path)? {
+			#[cfg(feature = "profile-index")]
+			let _guard = flame::start_guard("directory-entry");
+			let file_path = match file {
+				Ok(ref f) => f.path(),
+				_ => {
+					error!("File read error within {}", path_string);
+					break;
+				}
+			};
+
+			if file_path.is_dir() {
+				sub_directories.push(file_path.to_path_buf());
+				continue;
+			}
+
+			if let Some(file_path_string) = file_path.to_str() {
+				if let Ok(tags) = metadata::read(file_path.as_path()) {
+					if tags.year.is_some() {
+						inconsistent_directory_year |=
+							directory_year.is_some() && directory_year != tags.year;
+						directory_year = tags.year;
+					}
+
+					if tags.album.is_some() {
+						inconsistent_directory_album |=
+							directory_album.is_some() && directory_album != tags.album;
+						directory_album = tags.album.as_ref().cloned();
+					}
+
+					if tags.album_artist.is_some() {
+						inconsistent_directory_artist |=
+							directory_artist.is_some() && directory_artist != tags.album_artist;
+						directory_artist = tags.album_artist.as_ref().cloned();
+					} else if tags.artist.is_some() {
+						inconsistent_directory_artist |=
+							directory_artist.is_some() && directory_artist != tags.artist;
+						directory_artist = tags.artist.as_ref().cloned();
+					}
+
+					let song = NewSong {
+						path: file_path_string.to_owned(),
+						parent: path_string.to_owned(),
+						disc_number: tags.disc_number.map(|n| n as i32),
+						track_number: tags.track_number.map(|n| n as i32),
+						title: tags.title,
+						duration: tags.duration.map(|n| n as i32),
+						artist: tags.artist,
+						album_artist: tags.album_artist,
+						album: tags.album,
+						year: tags.year,
+						artwork: artwork.as_ref().cloned(),
+					};
+
+					self.push_song(song)?;
+				}
+			}
+		}
+
+		// Insert directory
+		if inconsistent_directory_year {
+			directory_year = None;
+		}
+		if inconsistent_directory_album {
+			directory_album = None;
+		}
+		if inconsistent_directory_artist {
+			directory_artist = None;
+		}
+
+		let directory = NewDirectory {
+			path: path_string.to_owned(),
+			parent: parent_string,
+			artwork,
+			album: directory_album,
+			artist: directory_artist,
+			year: directory_year,
+			date_added: created,
+		};
+		self.push_directory(directory)?;
+
+		// Populate subdirectories
+		for sub_directory in sub_directories {
+			self.populate_directory(Some(path), &sub_directory)?;
+		}
+
+		Ok(())
+	}
+}
+
+#[cfg_attr(feature = "profile-index", flame)]
+pub fn clean(db: &DB) -> Result<()> {
+	let vfs = db.get_vfs()?;
+
+	{
+		let all_songs: Vec<String>;
+		{
+			let connection = db.connect()?;
+			all_songs = songs::table.select(songs::path).load(&connection)?;
+		}
+
+		let missing_songs = all_songs
+			.into_iter()
+			.filter(|ref song_path| {
+				let path = Path::new(&song_path);
+				!path.exists() || vfs.real_to_virtual(path).is_err()
+			})
+			.collect::<Vec<_>>();
+
+		{
+			let connection = db.connect()?;
+			for chunk in missing_songs[..].chunks(INDEX_BUILDING_CLEAN_BUFFER_SIZE) {
+				diesel::delete(songs::table.filter(songs::path.eq_any(chunk)))
+					.execute(&connection)?;
+			}
+		}
+	}
+
+	{
+		let all_directories: Vec<String>;
+		{
+			let connection = db.connect()?;
+			all_directories = directories::table
+				.select(directories::path)
+				.load(&connection)?;
+		}
+
+		let missing_directories = all_directories
+			.into_iter()
+			.filter(|ref directory_path| {
+				let path = Path::new(&directory_path);
+				!path.exists() || vfs.real_to_virtual(path).is_err()
+			})
+			.collect::<Vec<_>>();
+
+		{
+			let connection = db.connect()?;
+			for chunk in missing_directories[..].chunks(INDEX_BUILDING_CLEAN_BUFFER_SIZE) {
+				diesel::delete(directories::table.filter(directories::path.eq_any(chunk)))
+					.execute(&connection)?;
+			}
+		}
+	}
+
+	Ok(())
+}
+
+#[cfg_attr(feature = "profile-index", flame)]
+pub fn populate(db: &DB) -> Result<()> {
+	let vfs = db.get_vfs()?;
+	let mount_points = vfs.get_mount_points();
+
+	let album_art_pattern;
+	{
+		let connection = db.connect()?;
+		let settings: MiscSettings = misc_settings::table.get_result(&connection)?;
+		album_art_pattern = Regex::new(&settings.index_album_art_pattern)?;
+	}
+
+	let mut builder = IndexBuilder::new(db.clone(), album_art_pattern)?;
+	for target in mount_points.values() {
+		builder.populate_directory(None, target.as_path())?;
+	}
+	builder.flush_songs()?;
+	builder.flush_directories()?;
+	Ok(())
+}
diff --git a/src/index/query.rs b/src/index/query.rs
new file mode 100644
index 0000000..d3c16b2
--- /dev/null
+++ b/src/index/query.rs
@@ -0,0 +1,209 @@
+use anyhow::*;
+use diesel;
+use diesel::dsl::sql;
+use diesel::prelude::*;
+use diesel::sql_types;
+#[cfg(feature = "profile-index")]
+use flame;
+use std::path::Path;
+
+use crate::db::{directories, songs, DB};
+use crate::index::*;
+use crate::vfs::VFSSource;
+
+no_arg_sql_function!(
+	random,
+	sql_types::Integer,
+	"Represents the SQL RANDOM() function"
+);
+
+#[cfg_attr(feature = "profile-index", flame)]
+pub fn virtualize_song(vfs: &VFS, mut song: Song) -> Option<Song> {
+	song.path = match vfs.real_to_virtual(Path::new(&song.path)) {
+		Ok(p) => p.to_string_lossy().into_owned(),
+		_ => return None,
+	};
+	if let Some(artwork_path) = song.artwork {
+		song.artwork = match vfs.real_to_virtual(Path::new(&artwork_path)) {
+			Ok(p) => Some(p.to_string_lossy().into_owned()),
+			_ => None,
+		};
+	}
+	Some(song)
+}
+
+#[cfg_attr(feature = "profile-index", flame)]
+fn virtualize_directory(vfs: &VFS, mut directory: Directory) -> Option<Directory> {
+	directory.path = match vfs.real_to_virtual(Path::new(&directory.path)) {
+		Ok(p) => p.to_string_lossy().into_owned(),
+		_ => return None,
+	};
+	if let Some(artwork_path) = directory.artwork {
+		directory.artwork = match vfs.real_to_virtual(Path::new(&artwork_path)) {
+			Ok(p) => Some(p.to_string_lossy().into_owned()),
+			_ => None,
+		};
+	}
+	Some(directory)
+}
+
+pub fn browse<P>(db: &DB, virtual_path: P) -> Result<Vec<CollectionFile>>
+where
+	P: AsRef<Path>,
+{
+	let mut output = Vec::new();
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+
+	if virtual_path.as_ref().components().count() == 0 {
+		// Browse top-level
+		let real_directories: Vec<Directory> = directories::table
+			.filter(directories::parent.is_null())
+			.load(&connection)?;
+		let virtual_directories = real_directories
+			.into_iter()
+			.filter_map(|s| virtualize_directory(&vfs, s));
+		output.extend(virtual_directories.map(CollectionFile::Directory));
+	} else {
+		// Browse sub-directory
+		let real_path = vfs.virtual_to_real(virtual_path)?;
+		let real_path_string = real_path.as_path().to_string_lossy().into_owned();
+
+		let real_directories: Vec<Directory> = directories::table
+			.filter(directories::parent.eq(&real_path_string))
+			.order(sql::<sql_types::Bool>("path COLLATE NOCASE ASC"))
+			.load(&connection)?;
+		let virtual_directories = real_directories
+			.into_iter()
+			.filter_map(|s| virtualize_directory(&vfs, s));
+		output.extend(virtual_directories.map(CollectionFile::Directory));
+
+		let real_songs: Vec<Song> = songs::table
+			.filter(songs::parent.eq(&real_path_string))
+			.order(sql::<sql_types::Bool>("path COLLATE NOCASE ASC"))
+			.load(&connection)?;
+		let virtual_songs = real_songs
+			.into_iter()
+			.filter_map(|s| virtualize_song(&vfs, s));
+		output.extend(virtual_songs.map(CollectionFile::Song));
+	}
+
+	Ok(output)
+}
+
+pub fn flatten<P>(db: &DB, virtual_path: P) -> Result<Vec<Song>>
+where
+	P: AsRef<Path>,
+{
+	use self::songs::dsl::*;
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+
+	let real_songs: Vec<Song> = if virtual_path.as_ref().parent() != None {
+		let real_path = vfs.virtual_to_real(virtual_path)?;
+		let like_path = real_path.as_path().to_string_lossy().into_owned() + "%";
+		songs
+			.filter(path.like(&like_path))
+			.order(path)
+			.load(&connection)?
+	} else {
+		songs.order(path).load(&connection)?
+	};
+
+	let virtual_songs = real_songs
+		.into_iter()
+		.filter_map(|s| virtualize_song(&vfs, s));
+	Ok(virtual_songs.collect::<Vec<_>>())
+}
+
+pub fn get_random_albums(db: &DB, count: i64) -> Result<Vec<Directory>> {
+	use self::directories::dsl::*;
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+	let real_directories = directories
+		.filter(album.is_not_null())
+		.limit(count)
+		.order(random)
+		.load(&connection)?;
+	let virtual_directories = real_directories
+		.into_iter()
+		.filter_map(|s| virtualize_directory(&vfs, s));
+	Ok(virtual_directories.collect::<Vec<_>>())
+}
+
+pub fn get_recent_albums(db: &DB, count: i64) -> Result<Vec<Directory>> {
+	use self::directories::dsl::*;
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+	let real_directories: Vec<Directory> = directories
+		.filter(album.is_not_null())
+		.order(date_added.desc())
+		.limit(count)
+		.load(&connection)?;
+	let virtual_directories = real_directories
+		.into_iter()
+		.filter_map(|s| virtualize_directory(&vfs, s));
+	Ok(virtual_directories.collect::<Vec<_>>())
+}
+
+pub fn search(db: &DB, query: &str) -> Result<Vec<CollectionFile>> {
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+	let like_test = format!("%{}%", query);
+	let mut output = Vec::new();
+
+	// Find dirs with matching path and parent not matching
+	{
+		use self::directories::dsl::*;
+		let real_directories: Vec<Directory> = directories
+			.filter(path.like(&like_test))
+			.filter(parent.not_like(&like_test))
+			.load(&connection)?;
+
+		let virtual_directories = real_directories
+			.into_iter()
+			.filter_map(|s| virtualize_directory(&vfs, s));
+
+		output.extend(virtual_directories.map(CollectionFile::Directory));
+	}
+
+	// Find songs with matching title/album/artist and non-matching parent
+	{
+		use self::songs::dsl::*;
+		let real_songs: Vec<Song> = songs
+			.filter(
+				path.like(&like_test)
+					.or(title.like(&like_test))
+					.or(album.like(&like_test))
+					.or(artist.like(&like_test))
+					.or(album_artist.like(&like_test)),
+			)
+			.filter(parent.not_like(&like_test))
+			.load(&connection)?;
+
+		let virtual_songs = real_songs
+			.into_iter()
+			.filter_map(|s| virtualize_song(&vfs, s));
+
+		output.extend(virtual_songs.map(CollectionFile::Song));
+	}
+
+	Ok(output)
+}
+
+pub fn get_song(db: &DB, virtual_path: &Path) -> Result<Song> {
+	let vfs = db.get_vfs()?;
+	let connection = db.connect()?;
+	let real_path = vfs.virtual_to_real(virtual_path)?;
+	let real_path_string = real_path.as_path().to_string_lossy();
+
+	use self::songs::dsl::*;
+	let real_song: Song = songs
+		.filter(path.eq(real_path_string))
+		.get_result(&connection)?;
+
+	match virtualize_song(&vfs, real_song) {
+		Some(s) => Ok(s),
+		_ => bail!("Missing VFS mapping"),
+	}
+}
diff --git a/src/index/test.rs b/src/index/test.rs
new file mode 100644
index 0000000..285149c
--- /dev/null
+++ b/src/index/test.rs
@@ -0,0 +1,139 @@
+
+use std::path::PathBuf;
+
+use crate::db;
+use crate::index::*;
+
+#[test]
+fn test_populate() {
+	let db = db::get_test_db("populate.sqlite");
+	update(&db).unwrap();
+	update(&db).unwrap(); // Check that subsequent updates don't run into conflicts
+
+	let connection = db.connect().unwrap();
+	let all_directories: Vec<Directory> = directories::table.load(&connection).unwrap();
+	let all_songs: Vec<Song> = songs::table.load(&connection).unwrap();
+	assert_eq!(all_directories.len(), 5);
+	assert_eq!(all_songs.len(), 12);
+}
+
+#[test]
+fn test_metadata() {
+	let mut target = PathBuf::new();
+	target.push("test");
+	target.push("collection");
+	target.push("Tobokegao");
+	target.push("Picnic");
+
+	let mut song_path = target.clone();
+	song_path.push("05 - シャーベット (Sherbet).mp3");
+
+	let mut artwork_path = target.clone();
+	artwork_path.push("Folder.png");
+
+	let db = db::get_test_db("metadata.sqlite");
+	update(&db).unwrap();
+
+	let connection = db.connect().unwrap();
+	let songs: Vec<Song> = songs::table
+		.filter(songs::title.eq("シャーベット (Sherbet)"))
+		.load(&connection)
+		.unwrap();
+
+	assert_eq!(songs.len(), 1);
+	let song = &songs[0];
+	assert_eq!(song.path, song_path.to_string_lossy().as_ref());
+	assert_eq!(song.track_number, Some(5));
+	assert_eq!(song.disc_number, None);
+	assert_eq!(song.title, Some("シャーベット (Sherbet)".to_owned()));
+	assert_eq!(song.artist, Some("Tobokegao".to_owned()));
+	assert_eq!(song.album_artist, None);
+	assert_eq!(song.album, Some("Picnic".to_owned()));
+	assert_eq!(song.year, Some(2016));
+	assert_eq!(
+		song.artwork,
+		Some(artwork_path.to_string_lossy().into_owned())
+	);
+}
+
+#[test]
+fn test_browse_top_level() {
+	let mut root_path = PathBuf::new();
+	root_path.push("root");
+
+	let db = db::get_test_db("browse_top_level.sqlite");
+	update(&db).unwrap();
+	let results = browse(&db, Path::new("")).unwrap();
+
+	assert_eq!(results.len(), 1);
+	match results[0] {
+		CollectionFile::Directory(ref d) => assert_eq!(d.path, root_path.to_str().unwrap()),
+		_ => panic!("Expected directory"),
+	}
+}
+
+#[test]
+fn test_browse() {
+	let mut khemmis_path = PathBuf::new();
+	khemmis_path.push("root");
+	khemmis_path.push("Khemmis");
+
+	let mut tobokegao_path = PathBuf::new();
+	tobokegao_path.push("root");
+	tobokegao_path.push("Tobokegao");
+
+	let db = db::get_test_db("browse.sqlite");
+	update(&db).unwrap();
+	let results = browse(&db, Path::new("root")).unwrap();
+
+	assert_eq!(results.len(), 2);
+	match results[0] {
+		CollectionFile::Directory(ref d) => assert_eq!(d.path, khemmis_path.to_str().unwrap()),
+		_ => panic!("Expected directory"),
+	}
+	match results[1] {
+		CollectionFile::Directory(ref d) => assert_eq!(d.path, tobokegao_path.to_str().unwrap()),
+		_ => panic!("Expected directory"),
+	}
+}
+
+#[test]
+fn test_flatten() {
+	let db = db::get_test_db("flatten.sqlite");
+	update(&db).unwrap();
+	let results = flatten(&db, Path::new("root")).unwrap();
+	assert_eq!(results.len(), 12);
+	assert_eq!(results[0].title, Some("Above The Water".to_owned()));
+}
+
+#[test]
+fn test_random() {
+	let db = db::get_test_db("random.sqlite");
+	update(&db).unwrap();
+	let results = get_random_albums(&db, 1).unwrap();
+	assert_eq!(results.len(), 1);
+}
+
+#[test]
+fn test_recent() {
+	let db = db::get_test_db("recent.sqlite");
+	update(&db).unwrap();
+	let results = get_recent_albums(&db, 2).unwrap();
+	assert_eq!(results.len(), 2);
+	assert!(results[0].date_added >= results[1].date_added);
+}
+
+#[test]
+fn test_get_song() {
+	let db = db::get_test_db("get_song.sqlite");
+	update(&db).unwrap();
+
+	let mut song_path = PathBuf::new();
+	song_path.push("root");
+	song_path.push("Khemmis");
+	song_path.push("Hunted");
+	song_path.push("02 - Candlelight.mp3");
+
+	let song = get_song(&db, &song_path).unwrap();
+	assert_eq!(song.title.unwrap(), "Candlelight");
+}
diff --git a/src/index/types.rs b/src/index/types.rs
new file mode 100644
index 0000000..6852d4e
--- /dev/null
+++ b/src/index/types.rs
@@ -0,0 +1,42 @@
+use serde::{Deserialize, Serialize};
+
+use crate::db::songs;
+
+#[derive(Debug, PartialEq, Queryable, QueryableByName, Serialize, Deserialize)]
+#[table_name = "songs"]
+pub struct Song {
+	#[serde(skip_serializing, skip_deserializing)]
+	id: i32,
+	pub path: String,
+	#[serde(skip_serializing, skip_deserializing)]
+	pub parent: String,
+	pub track_number: Option<i32>,
+	pub disc_number: Option<i32>,
+	pub title: Option<String>,
+	pub artist: Option<String>,
+	pub album_artist: Option<String>,
+	pub year: Option<i32>,
+	pub album: Option<String>,
+	pub artwork: Option<String>,
+	pub duration: Option<i32>,
+}
+
+#[derive(Debug, PartialEq, Queryable, Serialize, Deserialize)]
+pub struct Directory {
+	#[serde(skip_serializing, skip_deserializing)]
+	id: i32,
+	pub path: String,
+	#[serde(skip_serializing, skip_deserializing)]
+	pub parent: Option<String>,
+	pub artist: Option<String>,
+	pub year: Option<i32>,
+	pub album: Option<String>,
+	pub artwork: Option<String>,
+	pub date_added: i32,
+}
+
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
+pub enum CollectionFile {
+	Directory(Directory),
+	Song(Song),
+}
\ No newline at end of file