Hi Gang, I have a very weird issue with this Keyboard. Currently (attempting!) to use it with Garageband. I plug it in via USB, and Garageband Recognizes it, but when I go to play the Keyboard, only 4 notes are playable and when I play them they are sounding 2 notes at the same time only even though i'm only playing 1 key. I have no idea what's going on w/ this thing. It was working fine, then one day it started doing this! Anyone have ANY ideas?