MusicBrainz

Musicbrainz is a project building a creative commons database of music(specifically cd) metadata. They also make all of the software that they use to maintain this database available as GPL.

Musicbrainz is used by many audio related FLOSS projects.

CDs might be declining, but they are not dead-yet and you probably still have some ripping to do. This project makes is easier in a FLOSS-y way.

Donations can be made to MetaBrainz a non-profit foundation which maintains the MusicBrainz project.