Export to MP3, Could not open MP3 encoding library

I’m using Audacity 2.1.2 on Mac High Sierra.

When I go to Export Audio I end up with the message “Could not open MP3 encoding library!” I’ve tried all over the internet to find how to fix this problem and it just gets more confusing.

Can anyone here show me how to do it? Thanks,

If you upgrade to Audacity 2.4.2, it has the MP3 encoding library built in: https://www.audacityteam.org/download/mac/

That is exactly right, thanks for the suggestion. All systems go.

Perfect. Thank you Steve.