I just built a new Home Theater PC using the following components.
Asus M3A78-EMH HDMI motherboard (AMD 780G chipset)
AMD Athlon64 X2 5000+ Black Edition
XBOX360 external HD-DVD player
Windows XP Pro SP3 (with all patches and updates)
So I've got it all put together and it works great. I'm using the HDMI connector for both picture and sound. The HDMI cable is connected first to my Sony STR-DG910 home theater receiver which pulls out the audio portion then passes the video to my Samsung DLP HDTV. I get a great picture in 1920x1080 but the sound through my receiver only comes out in stereo. I've tried adjusting every setting I can find but can only get stereo sound. The same for both Cyberlink and Nero playback software.
How do I get dolby digital output? I've got everything setup for 5.1 goodness but no joy.
use coax or optical. Audio over hdmi is cool but if adding one more cable will solve your problem, why wouldnt you? Youre not sending the audio to the tv anyway right?