at the moment babellla the only way to record webcam decently is through the program linked previously in this thread, however it does not record audio, i do not know whether it has that option also or not.
You could record the video/audio using a screen recorder program also, and setting your recording to be from 'stereo mixer' or 'what u hear' (depending on your sound card) this option can be found under volume controls by clicking on Options->Properties *click recording radio button* from there you can play around with the settings
Hope that helps
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