Ok so I have my 560 ti connected to my denon avr-590 with an hdmi cable. In sound settings it comes up as denon-avamp-1 and i can configure it to "surround 5.1" in settings.. When i test it i get sound from all 5 speakers. But thats it. Once i play a movie i only hear the sound through the 2 front speakers. I even went on Youtube and did a surround sound test and had the same results. I have the latest nvidia 295.xx driver installed. I know the 5.1 works on my reciever because i tested my ps3 and xbox and they both produce surround. I even moved around the hdmi cables with the same results. Does anyone have any idea what my problem could be?