Can someone please help. I have just got my new denon 3802 and have it connected to my Sony DVD player via coaxial no problem, but am trying to connect it via optical to my pioneer laser disc player 925. I am getting sound come through the amp, but it only plays in Prologic 2 not dolby digital whatever audio channel I select on my LD Player. I have also set the amp to use VDP on Optical 1. Any suggestions?