I went into the midi options and turned off any midi thru boxes that were checked. I was unable to locate any reroute MIDI to DXi checkboxes though. After unchecking the thru boxes, I turned the thru back off on the SD-35, and still no sound. So I had to change the thru on the SD back to in1 to get sound. I have the speakers connected to the left and right outs of the SD-35. Not sure yet if I'll get the buffer full message, I'll update if we do...