Other
Perfect Sound Forever: The Migration of African Music
This site discusses the migration of African music throughout the world and its influence on other cultures. It also speaks of the types of instruments used and the way in which they express the moods and feelings of their players.
BBC
Bbc: Bitesize: Music of Africa
This site is a part of the About Music site of the BBC, and this interactive site lets you explore various parts of Africa, their music, their instruments, their sounds. Requires Real Player.