output from jack as /dev/dspX

[Atte André Jensen <atte.jensen@xxxxxxxxx>]

Hi

I'm trying to grab a video with the audio coming from jack. The command 
I run to get video/audio from my web cam is:
 ffmpeg -vd /dev/video0 -ad /dev/dsp3 -r 25 -s 640x480 demo2.avi
However, I'd like the sound to come from jack. Is it possible to get 
jacks output from a device similar to /dev/dsp3 that ffmpeg will understand?

--
peace, love & harmony
Atte

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