wow, ok. Let me first admit that i will have to read over all of it again but heres a brief comment.
None of the component connections i saw were ever above 720p
vga will not carry hd signal and dvi wont carry sound
which leads me to this
if the tv will be a monitor for pc you really need to look into vid cards that support true hd, that x1950 doesnt support the res to make the new tv worth buying. ATI has some inexpensive cards that support up to 1080p with hdmi, check out some radeon 3850 hd and up cards. This will put you in a way better position for sound also. Most hd vid cards have their own hd sound processor so both vid and sound carry through hdmi to tv then connect tv to speakers and alot of your problem is solved. As long as 1 connection is made from tv to speakers, all devices going through tv audio in should automatically be sent to your speaker system.
What is Sky HD? Satellite tv?


