Audacity: Free Audio Editor and Recorder
Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems
Audacity Wiki Home Page - Audacity Wiki
The Audacity Wiki is for Audacity® a free, open source software for recording and editing sounds.
Audacity: Documentation
This page contains manuals and user’s guides for the free Audacity sound editor.