ok, basicly I have my generic graphic/sound device that came on the board with the computer ,I have fitted a asus soundcard and a ati 4650 graphics card ..

I had previously configured my computer to send HDMI fead to my display ,but I had turned of the audio part of the signal.

The audio was handled by my asus xonar high end card via dig coax to my processor .

to enable my ati graphics to perform audio and video I initiated the following:

my computer , system properties, device manager, sound video and game contollers disable asus,enable ati ,

Video and audio to HD621 , HD621 takes care of the rest ....

818.3
, DSP8000SE, MacPro (the little bin), Virgin box, Sony XR77A80K, Missing Link Reference HCX cables, Townshend speaker support...