Well, you don't want the audio to go into HDMI if you can help it. Keep it in SPDIF - the lesser of the evils.
Kevin
I kinda agree

On the old system, I set Vista to use SPD/IF, then TOSLinked the optical out to the amp, and the coax spdif out to the spdif input on vga card, which it then sent up hdmi.
Then Mrs TB knew to use HDMI2 on telly for recorded tv, and I could switch on amp and use VGA on telly (both vga and hdmi cables connected to telly, set up as clone) for films etc.
Now, as the onboard video card of new mobo (and I don't want to go to discrete video card for a host of technical reasons, mainly around fans!) doesn't have a spdif in connector, I can't quite set it up the same.
So thinking along lines of setting output to spdif, sending coax straight to amp, and toslink to a spdif > 2 channel analogue adapter (preferrably downmixed).
Would that work? Anyone know of a cheap spdif to analogue converter (only for tv stereo speakers, quality not that important).