http://manual.audacityteam.org/o/man/preferences.html I found a better way to make it portable, I pre integrated ffmpeg and lame_mp3 http://www.lastos.org/team/AppRepository/Audacity _v2.1.0_ppApp.apz Its in the repo too, just thought I'd share it as I needed ffmpeg to re-encode my .wav PCM to mp4 AAC for use with a MKV slideshow. So I did something useful for a change