Thanks Scott, So essentially, i can't pick a sound from the computer, hit a key, and then have it play through the XWP1? When i hit a key, it triggers the computer to play the sound, but that sound only comes out of the computer, and not the line out on the synth. I've gotten around this by attaching an aux cable from the line out on the computer and running it to the mixer, but i have a feeling thats not how the pros do it...