Can't get sound through Denon 2808 Receiver via Apple TV.
Have tried HDMI and optical audio. Anyone successful getting sound in this configuration? ATV doesn't seem to be the problem as HDMI directly to TV works - both audio and video. HDMI directly to Denon passes video to TV but no sound. Tried optical audio adding optical sound being sure the Denon was set up for video HDMI and optical audio via manual set-up. I've also tried taking optical audio from the Sony TV to the Denon. This latter configuration worked for a while but doesn't anymore. Have tried changing the ATV to 16 bit (from auto) as one suggested - no joy. Can't think of anything else. I've walked through set-up with a Denon tech on the phone (they are outstanding by the way) and he couldn't think of anything to try after we determined the HDMI from Apple TV was working directly input to the TV. We didn't try optical input as he didn't think that would help. I gave it a shot based on what I had read on this forum. Thanks for any input that might help.
iMac, OS X Mountain Lion (10.8.3)