-mencoder -mc 0 -noskip -oac pcm -ovc copy -o "$1".mkv "$1"
-mplayer -noframedrop -ao pcm:fast:file="$1".wav -novideo "$1".mkv
-sox "$1".wav -c 1 -r 44100 -e signed-integer -b 16 "$1".wav.wav
+mencoder -mc 0 -noskip -oac pcm -ovc copy -o "$1".avi "$1"
+mplayer -noframedrop -ao pcm:fast:file="$1".wav -novideo "$1".avi
+sox "$1".wav -c 2 -r 48000 -e signed-integer -b 16 "$1".wav.wav