Hey StompStomp, I've had success using the USB from the HX Stomp to the USB in the computer. That way while I'm jamming with the tunes from whatever source on my PC/Laptop I can adjust the computer output volume through the computer volume control on the lower right hand side in Windows. I use my headphone out in the HX Stomp and that seems to work well.I've also had success using the 1/8" out on my laptop to the return/aux in on the right side of my HX Stomp and inputing a Return block to control that volume as well.
I hope that helps and I explained that clear enough for you. good luck.
