Speaking of frustrations .. I needed to power down my mR for a short time today (don't ask) and, when everything was back up and operational, I got nothing. No sound. I went through all the requisite steps to ensure sound would indeed be happening only to hear more silence. Went through it all again and while everything appeared OK, silence. As a kind of last resort I decided to connect the mR directly to the USB port on my DAC and voilá .. glorious sound! Apparently my USB-SPDIF converter shit the bed. Fortunately, I'm liking the direct connection as much as, if not more, than the converter.