(1) convert .avi, .wmv etc. to .wav:
mplayer -ao pcm:file=%7%out.wav MOVIE_FILES
(2) then it is easy to convert .wav file to .mp3 file:
lame -h out.wav out.mp3
(1) convert .avi, .wmv etc. to .wav:
mplayer -ao pcm:file=%7%out.wav MOVIE_FILES
(2) then it is easy to convert .wav file to .mp3 file:
lame -h out.wav out.mp3