I own a "Logitech, Inc. QuickCam Ultra Vision" web cam with a microphone. I have successfully installed it, I can get fedora to recognize it and even view video through all the web cam applications I've tried including vlc, cheese, and camstreem. It was automatically detected by Fedora and took no "tweaking" of my own.
The problem I'm having is I don't know how to access the audio. When I go to the pulse audio applet or volume contol (mixer) I can see my quick cam as in input, and I can even watch the audio meter move and respond to sounds I am making. But I don't know how to tell any applications where to get sound from... my video source is /dev/video0, what is my audio source? Since my audio level meter moves when i say things or make sounds, I assume it is there and ready, I just don't know how to access it.
I figure this should be pretty simple. I'd like to be able to record video/audio, or even just use the mic separately.