MusicBrainz, the Creative Commons licensed music metadata database, has long been limited to windows users. OS X users are in luck though, as iEatBrainz has been released.

By using a sophisticated set of audio fingerprinting and other technology, iEatBrainz and MusicBrainz allow you to re-tag all your MP3s. This is a killer feature for anyone that’s ever ripped one of their CDs with iTunes, but didn’t have a network connection at the time the songs were imported. Try it out, after a few moments MusicBrainz will likely find a match for all your “Track 01, Track 02, etc” tracks in iTunes. [via Ben Hammersley]