The Freesound Project, a site for sharing samples that can be freely shared and used in music, has announced a remix contest.
Here’s the info:
Remix The People Competition

Download: http://freesound.iua.upf.edu/packsViewSingle.php?id=1563
Make a song, a soundscape, a collage!
Upload to ccmixter and tag accordingly ( http://ccmixter.org/freesound )
Only cutting/pasting, some basic processing (eq, compressor, etc…) is allowed
Deadline is before the end [...]