I was reading about this topic somewhere else (can't remember) but some people were stating that most/all sound cards only output 2.1 via the TOSLINK/digital connections. Is that true or can you try some testing with 5.1 source on your computer?

I'm curious becasuse if 5.1 is available then I'd hook up my computer and play some UT2k4 on my HT. I wonder how badass that would sound!