Audacity can't find LAME library, I can't save Mp3? - Ask Dave Taylor
How to Install the LAME MP3 Encoder for Audacity | geekyprojects.com
How To Use LAME Encoder To Export MP3 Files With Audacity Editor
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