Loomis, here goes:
1. Get sound through front and surrounds both;
2. For Fios through digital using surround. For BD through 5.1 analog using dvd audio;
3. No but does not matter what input I connect to DVD, TV, SAT, etc., I still do not get center information through front L&R;
4. Yes, same issue with either coax or optical;
5. Not sure why this would matter but I tried it. No difference. No center channel info. to L&R fronts with hdmi plugged in or not plugged in; and
6. Finally, and I had high hopes for this one. Plugged rear speaker into center channel and got center channel audio loud and clear.
This is very perplexing.
Anyone??