I'm using Procaster and have been trying since day one to get the sound to work. I've turned on everything and I only get a click that goes off every few seconds. Anyway, I use Windows XP Home and typically have it on a "Normal Quality" setting. If you need more information, please let me know. I'd love to be able for my friends and family to hear what's going on!
Here's a screenshot of what I've got:
Those are what I have available but, like I said, none of them produce any audio when I go to watch the video on Livestream. I can hear everything, though.
Right now I just want to be able to use the desktop audio, as I don't have a microphone just yet.