I have recently purchased a Yamaha RX-V463 receiver for my home theater. It has HDMI switching but I cannot get the audio to work when I play bluray movies from my computer through the amp to my tv. The video is fine but no sound. I can get analouge audio via the 3.5mm audio jack to work but the quality isn't fantastic.
Laptop -> TV via HDMI works fine for video and audio

Laptop -> Amp via HDMI -> TV via HDMI works for video but not audio

My laptop (dell xps16) claims to be able to output dts and dolby digital but when I run the test tone I get the message "Audio format not supported, Could not play test tone" or something to that effect.
If anyone has any advice or a solution that would be great.
I am dowloading the lastest realtek ATI HDMI codec pack so I will see if that has any effect.
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