[linux-audio-user] output from jack as /dev/dspX

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
http://www.atte.dk      | quintet:      http://www.anagrammer.dk
                         | compositions: http://www.atte.dk/compositions