:start
ffmpeg.exe -i %~s1 -vn -c:a libmp3lame -q 2 "%~dpn1.mp3"
ffmpeg.exe -i %~s1 -vn -c:a libmp3lame -aq 2 "%~dpn1.mp3"
@shift /1
@if not %1x==x @goto :start
pause