anyone use it?
http://musicbrainz.org/
MusicBrainz is a community music metadatabase that attempts to create a comprehensive music information site.
i've been using it to go through all my music (100+GB). it's taking forever, but it'll be so nice to have a properly tagged music collection.
this is the actual program you use:
http://musicbrainz.org/doc/PicardDownload