Audacity

Audacity is a great open source (free) program for recording or editing audio files. 

Download Audacity (WIN7) - DOWNLOAD

LAME .MP3 Encoder - DOWNLOAD

FFMPEG Import/Export - DOWNLOAD

Some short tutorials on how to use Audacity.


Beginner

Audacity Basics from Mr. Sheehy on Vimeo.

Advanced

Audacity almost intermediate from Mr. Sheehy on Vimeo.