Use these sources for demo:

http://www.khazar.com/art3870/lectures/lecture17/sounds/clark.mov

http://www.khazar.com/art3870/lectures/lecture17/sounds/mx2.mid

http://www.khazar.com/art3870/lectures/lecture17/sounds/parks.mp3

http://www.khazar.com/art3870/lectures/lecture17/sounds/swoop.mp3

http://www.panix.com/web/faq/multimedia/sample2.ram