There are many other people and organizations dedicated to free music. Here are a few:
The Electronic Frontier Foundation
Mp3 Resources – mp3 related news, books and web resources.
And here are some other sites of interest:
Slashdot – keep up on the latest goings on regarding music freedom, digital rights, and lots of other geek stuff.
Penny Arcade – really funny.
PvP Online – also really funny.
Film Resources – film related news, books and web resources.