I just got this from Wal-Mart:


http://img341.imageshack.us/img341/7863/piano1pr8.jpg

http://img398.imageshack.us/img398/1208/piano2hr6.jpg

http://img251.imageshack.us/img251/1614/piano3ht9.jpg


Basically... its a speaker in a sneaker! It doesn't take batteries, but the sound quality is better than my $25.00US pair that I bought a while ago.