Ever get stuck teaching a newbie on how to download music and burn music. This is my favorite to avoid the uncomfortable silence and dealing with a slow connection. Use The Beattle's Her majesty song. It comes in at a wapping 305 kb. Shortest hit ever. Usually no problems with sources.
This way they get the whole runaround and you can get back to your high speed downloading at home.
Just a tip but it's one of my shortcuts to good training.
Steeve