Audacity audio editor updated to v2.3.2, now comes with LAME mp3 encoder
How to Install LAME MP3 Encoder in Audacity - YouTube
How To Use LAME Encoder To Export MP3 Files With Audacity Editor
LAME MP3 Encoder - WSU Technology Knowledge Base
How to Install the LAME MP3 Encoder for Audacity | geekyprojects.com
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