Hi everyone, I am a complete beginner of the MIDI protocol and I have a question for you experienced users. My Korg D1 digital piano is directly connected to a pair of external monitors Yamaha HS5 via Line Out L/R cables. The piano is also connected to a Macbook with a MIDI-USB cable (ESI MidiMate eX), both MIDI-In and MIDI-Out are connected. The question is this: is it possible to configure the Mac in order to listen the Garageband audio output through the Yamaha monitors connected to the keyboard? Is there a way to have the keyboard, or its speakers, selectable as Audio MIDI Setup output? Thanks in advance!