MusicBrainz is a project that aims to create an open content music encyclopedia. It was founded in response to the restrictions placed on the CDDB, like the FreeDB project. However, MusicBrainz has expanded its goals to reach beyond a compact disc metadata storehouse.
The content of MusicBrainz is currently licensed under the Open Content License, although the project leaders want to move to a different license for the project[1]. The server software is covered by the GNU General Public License, while the client software is under the GNU Lesser General Public License, which allows use of the code in propiety software products.
