On Sat, Jun 15, 2013 at 3:52 AM, Federico Leva (Nemo) <nemowiki@gmail.com> wrote:
For a closer integration with MusicBrainz, they'd probably have to change their (non)licenses. <https://en.wikipedia.org/wiki/MusicBrainz#Licensing> (They seem to claim they're free content, but they aren't.)
The core MusicBrainz facts (artists, albums, tracks) are in the public domain. It's the extra stuff like user generated comments, ratings, etc that they license.