Ok, I've read your links Quad and had a think about this.
As things are I can stream music between two decent audio systems in my living room and my bedroom, the only two rooms I'm interested in having that facility.
I'm a member of this UK DIY audio forum and they talk a lot of outboard DACS. Seems decent ones don't really cost a lot of money either.
So how would I employ a DAC? I'm assuming it would go between the computer's digital output and my amplifier via my switcher.
But this is where I get confused. I'm using the media computer's motherboard's onboard sound, which doesn't have a digital output, just analogue. So it seems to me I'd need to get a soundcard with digital output to take advantage of a DAC.
I'm really a little confused about this, any enlightenment would be welcome