Setting up a specialized filesystem for music storage seems both overkill in terms of implementation and maintenance issues, and underkill in terms of features. What would be more appropriate is a database table schema that stored music and lots of metadata (Artist info, title/album/recording/remix/venue info about a track, genre information, record label, user ratings/comments) about different recordings, storing the recordings themselves as either BLOBS of mp3s/oggs or (probably better) indexes into a normal filesystem containing the mp3s. Write a quick table browser to go through the collection, and construct a bunch of SQL queries to generate playlists by artist or genre.