How do I set up a multiple webcam shoot with a different audio source?

[Jack Maverik]

I want to set up a multi-webcam video stream (uStream, Justin.tv, Skype, whatever) but have it so it like auto switches between 2 webcams and get the audio, not from the webcams, but from a seperate audio source (like a small recording interface or something).

How do I do this?

Also - I need 2 decent webcams that shoot good in low light conditions.

Talk to me!

 

[CompTIA_Rep]

You can try separate SoundBlaster cards which various input source selection as mic, such as "what you hear" but you would need one for each sound source.