Does someone use whole house surround audio system which connect

to HTPC, Could you share with the configuration? I like to buy a 4 zone  3 channel receiver. I just do not figure out how to connect master zone as 7.1 or 5.1 system. Also how to connect to PC to get sound out.
Thanks for your sharing.

updates: I finally figured out how to do it. Here is what I used in my system:
http://www.htd.com/Products/mid-level-whole-house-audio
If I have time, I will put down what I did. Many useful information and it would gone with wind if I do not put them in writing. :-)