HOW TO – Export an mp3 from Audacity for Windows | Digital Writing 101
How to Export an Audacity File As an MP3 in 2 Simple Ways
How To Use LAME Encoder To Export MP3 Files With Audacity Editor
MP3 Export Options - Audacity Manual
Audacity Best MP3 Export Settings - Simple Steps & Examples
Save Selected Portion of MP3 Audio File? - Ask Dave Taylor
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