Hey everyone!!! I just realized that there's a way I could hook up my midi controller board (piano with no sounds...actually it's a keytar!)), to the garageband organ simulator's!! But all I have for an interface is the older model Tascam us122. And the power source for that is when the usb connection is plugged in. But when i've recently tried to plug that into my Mac, the Interface won't turn on, or the Mac doesn't even recognize that something was plugged in. I am a new Mac owner, from a PC. So is this normal...should I have to search to find where the source is to be turned on??? Or do you know if Tascam is even compatible with Mac??? Also...if you are wise to this sort of rig for music....is there a way to download a reverb module on here to play live with??? I appreciate and and all reponse's. Thank you in advance!!!