Here is one of the bigest challanges for HTPCs right now:
How to get sound from your HDMI port. What answers/solutions have you come up with? One of the main reasons I went with the Auzentech Prelude sound card is because there is supposed to be an HDMI extension card for it in production (estimated release is late 2008). Currently I use RCA cables from the Prelude to my receiver's 5.1 input. Auzentech is supposed to be releasing DTS Interactive drivers for the Prelude any day now (they claimed Q2 2008, but they are late) which should at least get me full time DTS from the optical port.
My plan/hope is to eventually get to only 2 cables running from the HTPC., a power cable and a HDMI cable.
Feedback/Rep: Heat -- eBay
There is an elegant solution for every problem... and sometimes elegance comes in the form of a very large hammer.