The classic 1981 album "My Life in the Bush of Ghosts," by Brian Eno and David Byrne, has an impressive web site, including a section where you can download the original twenty-four-track master recordings of several songs, to make your own remix. The album was re-released in 2006, and the web site demonstrates the fan community that still exists for the album.
The Wikipedia entry has more on the history the album; here's a snippet:
The album was one of the first non-rap releases to make extensive use of sampling, especially in seamlessly incorporating human voices: most of the vocals on the albums come from other sources, such as commercial recordings of Arabic singers, radio disk jockeys and an exorcist. Critic John Bush describes My Life in the Bush of Ghosts as "[a] pioneering work for countless styles connected to electronics, ambience, and Third World music."
Check out the remixes and submit your own...if you dare.