Check out these awesome sites!
patatap.com Patatap
isleoftune.com/ Isle of Tune
www.nyphilkids.org/ New York Philharmonic for Kids
www.sfskids.org San Francisco Symphony for Kids
www.quavermusic.com Quaver Music (sign up for a free account)
http://www.incredibox.com Incredibox
http://www.unitunitunit.com/qwertybeats/ QWERTY beats
http://midnightmusic.com.au/theta Rhythm Puzzles-Theta Music
www.musictechteacher.com/musicquizzes.htm Music Tech Teacher