Download Portable Audacity Setup Extractor (0.6 MB) 02/11/17
Download in same folder
In first screen enter Version Number: 2.3.1
Will be also extracted if found in same folder:
libmp3lame-win-3.99.3.zip and ffmpeg-win-2.2.2.zip from
If you need a newer version of Lame, extract lame_v3.99.5.zip from in AudacityPortableAppLAME
Settings of installed Audacity should be preserved.