Just got my Denon 2910 today So far so good except for one issue. Having not had a DVD-A player before, I was looking forward to listening to some discs I have instead of just via the standard DVD Video DTS tracks. However when I select this option on the discs, the Denon appears to play but I get no sound from my Yamaha 2400 receiver. Connection is via co-axial cable. Works fine in all other respects and I get 5.1 surround via DTS or DD. Am I missing a simple setting - anyone any ideas???