I heard about musopen.com and thought is such a good idea it warranted an off-topic post on a game blog. Museopen uses donations to pay professional musicians to record non-copyrighted (Bach, Beethoven, etc) music and then releases the performance with no copyright restrictions and it is all a free download. It is a boon for schools, no-budget filmmakers and remixers. They are currently running a kickstarter program and I kicked in a few dollars for this great idea.
Trask, The Last Tyromancer