I just figured out how to capture both audio and video from my own PC -- this is something that had been irritating me for a long time. The benefit is that I can now record non-downloadable videos without needing to play them through another computer and feed them into my capture card.
The problem I've had up until this point was capturing the audio -- capturing video from the screen was easy, but I couldn't figure out how to get the audio. (I'm on Vista, btw.) Then I realized a very simple solution: route the audio output from my PC right back into the input. (It actually loops through my receiver first.)
Anyway, this will make it a lot easier to capture some cool videos, so you actually might see the benefits down the line!
© Jed Lewison