I was trying to watch a Blu Ray last night and the audio is only partially working. The sound effects and music are working, but the audio for the actors spoken lines are not working at all. I also tried with another disc and same issues. I have the HDMI from the Sony GTV Blu Ray player going through my Denon AVR 1911 receiver. I only have 2 speakers attached to it. Are there any settings that I need to change? Any help would be appreciated.