[browser-shot url=”http://audacity.sourceforge.net” width=”600″ height=”450″ href=”http://audacity.sourceforge.net” target=”_blank”]

Audacity is a free open source digital audio editor and recording computer software application, available for Windows, Mac OS X, Linux and other operating systems. Audacity can be used for post-processing of all types of audio, including podcasts by adding effects such as normalization, trimming, and fading in and out.