Hello :-)

How can I find out the /dev name of my usb audio from my webcam?

I currently have webcam working for video in the 'record monitor' with '-f video4linux2 -s 320x240 -r 15 -i /dev/video0' ...these params were the defaults and work well for video.

But there are no defaults for audio :-(

The audio on the webcam works fine with skype and the standard sound recorder that comes with gnome.

I'm trying to get sound to work. I have the same issue. Skype works with sound and video, Kdenlive only works with video. Sound for me is chopped and altered. But I do have a default sound:
-f oss -i /dev/dsp -f video4linux2 -s 320x240 -r 30 -i /dev/video1
/dev/dsp with oss (I tried /dev/dsp1 with same problem)
for me /dev/video is my TV-tuner card, video1 is the webcam.
I am using Ubuntu 9.04 with Pulse turned off I think.
Anyone have ideas on what "audio device" and "format" might work?

Webcam capture just uses the ffmpeg command line utility and the OSS (/dev/dsp) for audio input. Newer versions of ffmpeg have some support for ALSA. If you can get your webcam audio to work in ffmpeg or ffplay, let us know how you did it, and we can enable support for it.