I have an adcom amp/preamp combo and have been trying to hook my new computer to it in order to produce dolbly digital sound replay. So far no matter what i have tried i have not been able to get 5.1 and higher sound to play. I can get normal stereo or at least sound from both speakers to come through. I am using a f1 fatality sound card and trying to connect to an adcom gtp 830. Can anyone help me get my adcom to play 5.1 sound please. If more info is needed i'll be happy to provide it. Thanks much in advance.