i have digital adapter in one of my tv setups.. the other has the digital HD box.. the digital adapter is hooked to an HD TV and it has a simple cable in and cable to TV setup. Also, there is an IR input which is not being used.. I have tried to get this setup to run thru my home theater system w/o success.. is there any way I can achieve getting the sound to run thru my home theater system...thanks much...tom neville.. nevilletp@gmail.com