Download LAME for Audacity in 2021 (How to Install & Update)
Audacity tutorial: Converting to mp3 or AAC and other formats, example: Matthew Smith - epic orchestral synth music for film and game effects; Buanzo's LAME mp3 library
Libraries Preferences - Audacity Manual
LAME MP3 Encoder (64-bit) Download (2022 Latest)
Audacity Could not open MP3 encoding library - Newbie Forum - Club Myce - Knowledge is Power