Installing a library is very similar to installing plug-ins. In this example, we'll install LAME, a high-quality MPEG Audio Layer III (MP3) encoder. However the ffmpeg libraries or binaries are also available in the same location. Again, you install in three basic steps: download, extract, and then save the files in the Audacity folder.
All of files on this site are accessible, but some browsers, firewall, and proxy combinations cause some downloading issues. Two notes: