So I've had this unit since last January. It plays SACDs fine, but I can't get DVD-A to work. I have it set on bitstream, do I need to switch it to PCM? I bought a Coltrane DVD-A and it says its playing, but no sound. I have it running optically into my reciever. Also, I burned a DVD+R using scott browns iso maker, and nero. It won't play. Do I need to use a DVD-r?