Thanks

Oh, there was a computer-section. Completely missed it (possible to move this thread?)

The problem with using the DACs in the yamaha is that Media Center uses Windows Media Player. And getting Windows Media Player to output an untouched digital stream is quite difficult.
Also you would have to go into the driversettings everytime you need to change between stereo and surround, not that convenient and it does not scale that high on the WAF (basically that would mean that I'm the only one in the family capable of doing it ).
Also you would need an analog connection besides that for using when streaming TV and such.
One thing that I haven't confirmed working would be too have 2 external digital audiocards (they are the cheapest that only output true digital untouched signals, if you can find the *right* one) and the internal analogue one. One external for stereo, one for surround and the internal for TV and such things. Yeah, does seem quite overcomplicated I know and I bet there will be issues, thats why I'm leaning towards an non-digital approach. Under the assumption that I can get similar or better quality.

And I guess I would face the same problems when using an external DAC? (guess they don't take USB or something like that)
Although an external soundcard would work if it's connected though USB/firewire and since the computer is in a closet that really isn't a big deal so if that helps that wouldn't be a problem.

As far as the music goes everything is in lossless.
Currently WMA lossless though. I will look at using FLAC instead but I'd have to use an ogg container or something so that ID tags work, and then I'd just have to get everything to work in MCE