I was considering going to a wireless 7.1 receiver... so It's a bit early for this, as I prolly won't make a purchase until I can get a black friday deal or something.
I'm currently have a wired hook up to the HDTV from my HTPC with:
1) video 75ft wire (wired under the house and back in)
2) stereo 75ft wire left-right (wired under the house and back in)
My current Pioneer audio receiver is a 1st generation 5.1 receiver. Before they had there own decoders on board. In that event I purchased a specialized DVD player to match it, that does the decoding for me and has the discrete outputs. namely --> L,R,SR,SL,C, and Sub... So when I play a DVD I actually have blissfully 5.1 wonderful sound. It is possible to make use of this instead of trashing it, if I find a decoder box or something. However I'm not in the mood to run another wire under the house.... maybe. - ideas please?
Of course right now when receiving sound from the PC for movies or music - I turn on the Dolby Surround mode and play it in 'quadraphonic'. But this is old school at this point.
Another question: If I did purchase a new receiver. There is appox 60ft between where the a new wireless audio deck would sit and the HTPC. Would that work even between some walls? - Sub $500... ? - Next question - Would there be a delay? A delay would be unnacceptable.
Often we are moving from room to room and the HDTV and a monitor are wired together with a video splitter - it is really ugly if there is a time difference. A time difference occurrs if my wife decides she is going to watch something in the living room from that cable box instead of the HTPC. Then she'll go into the bedroom and turn on the same program on the cablecard-enabled HTPC... the two will be a couple seconds apart. Of course my wife doesn't notice glaring issues like those, but it annoys me to my grave.