I’m recommending to Audacity Team (of which I am a member) that we just delete that old website as it is well out of date and very misleading and as far as I can see serves no useful purpose whatsoever.
I posted the following in another thread; I’m copying it here for people who are struggling with getting the LAME library to work, even after upgrading Audacity, or importing the library:
I was able to export an MP3 (overcoming the problem with Audacity not finding the LAME library; BTW I’m on Mac 10.14) thanks to Steve’s recommendation to use ls at the command line to find the path of mp3lame.dylib
Here are the steps that worked. At the command line, type:
ls “/Library/Application Support/audacity/libs/”
That tells you where the file is located (if it IS on your system). The file wasn’t listed when I searched USERS (an interesting problem itself with Finder). I had to search only on the hard drive in order to find it.
Once you know where it’s located, you can export to MP3 by directing Audacity to the LAME file, following the path listed by using “ls” at the command line.