No, DVI does not support audio and the 990 cannot get audio data through its DVI connection. Also, the 990's DVI switching is "passive" only - so it won't convert analog video sources (such as the component video cables we were discussing above) for the DVI output. Since my experience with cable and satellite is that differences in picture quality between component and DVI/HDMI are negligible or non-existent, I'd suggest using component for both video sources in your case and getting the benefit of the 990's video switching.