Amarok is a Music Library Organizer. It uses SQLite, MySQL or PostgreSql to index your entire music library. Amarok blows iTunes away. The interface is light weight and beautiful. The ability to search, sort and create playlists couldn't be any easier. As the player changes songs, a "Web 2.0" banner fades in showing you the name of the track, the artist, the album and the album artwork. It took about 10 minutes to index my entire library of 40GBs.

Amarok currently only runs on Linux. The Amarok Development Team is working with Google in the Summer of Code project to natively port Amarok to OSX and Windows. So hopefully you will be able to use the best music player in the world real soon.

Amarok alone would make me switch to Linux, had I not gone 'buntu already. So make the switch cause Amarok is well worth it.