Hi, I don't know much about the program, so no, I haven't tinkered with any thru settings in BiaB. The only setting I changed was the MIDI driver setup to use the USB MIDI interface. What do you suggest I change the BiaB settings to? I don't know why the sound stops when I turn the thru off on the SD-35. Apparently that's not supposed to happen if it's supposed to be the fix =(