I too have this question.  I Don't think so.  I think you need minim out for audio and [quicktime out] to save video ... there's no way for these to save audio and video in the same file.  Now, I haven't played around with the gstreamer libraries but it almost looks as its the next big thing.  On linux. gstreamer does audio and video so it might in processing too.

Also, if audio and video can never be combined into a single output file, could you please post tips on synchronizing the two when using a third party editor to combine them?

I am self taught at programming-- but I feel like this should be able to be accomplished using applescript? But I have no idea.