Ok guys, I got my Asus board and have been playing around in both Nero and WinDVD 9. I'm not really sure, but it's been working really gravy for me. Full 7.1 audio on both Blu-Rays and HD-DVDs. There are many people on this forum having issues with the Asus board and I luckily haven't run into any except for 2 which are annoying, but livable. #1. My screen is overscanned and there's a slight delay on audio playback. It's still in synch, but certain Window sounds less than a second long will be mute. Movie/music playback is not effected at all.
As far as HTPC capabilities go, there's no problem at all. There is one gripe I have with WinDVD 9. As you see my other posts, I'm in the "motion blending" camp of visuals. One thing I really liked about WinDVD was the Trimension DNM on the DVDs. Thing is you have to use pure software decoding. Problem I'm having is that whenever I put in an HD-DVD or Blu-Ray, HA comes on and I CANNOT take it off. I really wanted to see how DNM would look on an HD-disc. But it's ok I still have FFdshow for that...
Overall this board was easy to install, and works pretty flawlessly. I am using the 404 BIOS and Vista 64 Ultimate SP1. Latest Nforce and 175.16 Nvidia drivers. Hardware down below:
AMD Phenom 9550
Asus M3N78-EMH HDMI
4GB(soon to be 6GB) Patriot DDr2 PC6400 memory
Western Digital Green Power 500GB HDD
Silverstone LC11B-M case
JVC RS400, Denon X6300H, Klipsch RP-280F x 2, RP-450C, RB-51 II x 2, RS-42 II x 2, RB-41 II x 2, R-150M in 7.1.4, 180" Painted wall
LG 65C7, Denon X4300H, Klipsch RF-26 x 2, RC-52 II, Onkyo speakers in 5.1.4 setup
TCL 55P605, Onkyo 636, Theatre Research bi-amp tower speakers in 3.0 Setup
Vizio D40u-D1, Klipsch 2.1 THX certified speakers, Xtension Pedestal Sit Down cabinet