Sources for legal "re-mixable" multimedia

Question: Our students are always asking to use music from commercial CDs in their digital movie projects created for class assignments, but I know these products cannot be shared online. Where can students find legal sources of audio content that can be “remixed” into multimedia projects, like digital movies?

The IT Guy says:
Two of the best sources for free music / audio files for student multimedia projects are Creative Commons Audio and FreeplayMusic. I have listed several other websites on my page “Free Audio for Podcasts.”

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