Multimidia:Extracting audio

$ mplayer -dumpaudio foo.flv -dumpfile bar.mp3

or

$ ffmpeg -i foo.flv -ab 128 -ar 44100 bar.mp3

also

$ mplayer -dumpstream http://STREAM_HOST -dumpfile foobar.mp3

or

$ ffmpeg -i http://STREAM_HOST -ab 128 -ar 44100 foobar.mp3