(This post is inspired by
mensch/maschine's latest.)
LeWiki404:Mp3Legal is a french directory of portals and websites offering free downloadable music for quite a large variety of styles. It is, of course, not exhaustive, but is run by the users themselves (you can edit the page anytime and add your links).
My personal favourites are
C8,
Epitonic and
Widerstand.
If you find similar initiatives, post them as replies to this post!
