I have my xbox 360 connected to my HD monitor, and the audio comes through my computer's line in port. I have it output to my sound system, but I'd like to have the option to have it come out of my USB headset if I wanted. Sometimes my girlfriend's watching TV and I want to play xbox and my only options are don't play, or play with no sound, which is really hard to do. Is there a way to use Vista's What U Hear to throughput that sound to the headset? I've tried setting the input to Line-in and the output to the headset, but it still comes through the speaker port, and I can't figure out why. The computer's sounds come through the headset, but the xbox comes through the line out. If I unplug the headset, the sound for both the computer and the xbox come through the line out port at the same time.