Convert any flv/mp4 and pretty much anything into .mp3

any2mp3

#!/usr/bin/env bash
# any2mp3
# Converts to mp3 anything mplayer can play
# requires: mplayer and lame
# Also ensure you have space to dump the .wav

TMP=audiodump-`date +%s`.wav

[ "$1" ] || { echo "Usage: $0 file1.wma file2.mp4"; exit 1; }

for i in "$@"
do
    [ -f "$i" ] || { echo "File $i not found!"; exit 1; }
done

[ -f "$TMP" ] && {
    echo "file "$TMP" already exists"
    exit 1
}

for i in "$@"
do
    ext=`echo "$i" | sed 's/[^.]*\.\([a-zA-Z0-9]\+\)/\1/g'`
    j=`basename "$i" ".$ext"`
    j="$j.mp3"
    echo
    echo -n "Extracting $TMP from $i... "
    mplayer -vo null -vc null -af resample=44100 -ao pcm:waveheader:fast:file="$TMP" \
        "$i" >/dev/null 2>/dev/null || {
            echo "Problem extracting file $i"
            exit 1
    }
    echo "done!"
    echo -n "Encoding to mp3... "
    lame -v -m s "$TMP" -o "$j"  && rm "$i"
    echo "done!"
    echo "File written: $j"
done
# delete temporary dump file
rm -f "$TMP"