I have a ViXS Pure TV-U 48B0 Tuner Card on my HP running Vista Home Premium, and I am having problems with the sound. No, I hear sound when I watch Tv, but my card has an audio line in (red/white RCA) which does not show up in the device list, the Realtek Sound Mixer, Recording Devices, Playback Devices, or the Realtek HD Audio Manager. So I wanted to use that line in, but I can’t seem to find how to turn it on, since no sound comes in. Any help would be greatly apreciated.