I am trying to record some demonstration videos on my PC using Camstudio but although it is recording the video, it is not recording the audio. I have it set up to record from the Speakers RME HDSP9632 (which my headphones are plugged into) but it says it can't find a recording line and just records silence.

In fact, I am never able to record streamed audio unless I use the Digicheck program. But here I need to record more than just audio so Digicheck is no use here.

Any ideas how I would do this?

Many thanks.