I have a Yamaha PSR-292 keyboard an M-Audio MidiSport Uno and GarageBand. When I hook the keyboard up to the adapter and plug it into the computer I can hear the sounds in garage band, but it is very quiet.
It's not that my computer volume or instrument input volume is too low. Its just quiet. I was hoping someone else had this problem and could help me!
I also checked the manual to the keyboard, but there is no volume control for output.....