Thanks Gonk. Wouldn't FM radio qualify as a source that should work in 5 channel stereo? This takes all the bitstream vs. PCM out of the equation.

On my DVD player I'm a bit unsure. I run a toslink cable from my Denon unit to the 970. I believe that the Denon only offer either bitstream or PCM, but I can tell you that I do get audio from a CD to my system.

Yes, I'm using the stereo button to attempt to toggle between the modes, but without luck so far. I've also tried to manually achieve 5 channel stereo via the front panel buttons with similar results.

TIA