Here at Geekido Studio we write a lot of music.
If you want to check it out, click on over to our Geekido Music Jukebox Player.
Our jukebox is a custom creation (and, as with everything, it seems, a work in progress). We build it using our “autobandsite” generator. All we need to do is dump all our MP3 files (with ID3 metadata) into a file and run a script. The script generates a static site using all the metadata to generate the playlists and links. No server-side processing!
At some point the jukebox will probably move over to this web site.