Garageband recognizes midi but won't play
I have an ALesis QS7 Keyboard and a Yamaha UX15 midi to USB interface that I've plugged into my Macbook Pro in hopes of recording some midi tracks. Unfortunately, while I do get Garageband to recognize the midi, it doesn't respond when I play the keyboard. Can someone tell me what seetings I need in these areas:
System Pref --> Audio In
System Pref -> Audio Out
Garageband Pref -> Audio IN
Garageband Pref -> Audio Out
Audio Midi Utility
Basically, when I have Garageband open and I plug in the USB from the Yamaha, Garageband comes alive and says: "The number of MIDI inputs has changed. You now have one available" But the sound doesn't play.
MacBook Pro 15", Mac OS X (10.5.8)