Libre.fm

We're building a free network service that will let you share and
discover new music.

Libre.fm is a project to help you keep track of what music you like and
share that, with your friends, discover new music, and meet new people
who share your taste in music.

    * Complete public source code licensed under the GNU AGPL!
    * You own your own data!
    * Use our service, or run your own!
    * Get started and hacking today!

We're still in the alpha stages of the project, but many users and
developers are actively using Libre.fm to share their listening habits.

I would like Libre.fm to include all the useful things we can add for
the semantic web, and even as a very young project, we have a lot of
contribution and the project moves at an incredible pace, with new
features being added every few minutes.