My track Cuckoo with the lovely vocals of Lisa DeBenedictis is reused in the open source film Stray Cinema:
http://straycinema.com/watch/cuckoo/ (take note of the credits of filmmaker Andy)
Another fine example that thanks to the Internet, remixing is as alive as it used to be in the early days of hiphop. Reason? Because a less restrictive copyright which I am using, Creative Commons, opens up these new possibilities. Art = recycling = remixing.
Expand your soul!