Audacity is one of the best cross-platform free audio software that allows you to record and edit sounds. This audio editing software is developed under GNU General Public License (GPL). Audacity won the SourceForge.net 2007 Community Choice Award for Best Project for Multimedia. It is one of the most popular downloads at SourceForge.net with over 54 million downloads.The following are the some of the features of Audacity:

You can record live sounds.
You can convert your old tapes and cassettes into to digital audio format that can be played on your computer.
Edit audio by simple features like cut, copy and paste across a wide range of audio formats like Ogg Vorbis, FLAC, WAV, Mp3, etc.
Add effects to the recorded sounds. Remove unnecessary noise from audio.
You can mix different audio tracks together for multi-track mixing.
You can change the pitch of the audio without changing the speed of it.

Compatible with Cross-platform operating systems:
Windows 98/ME/2000/XP/Vista, Mac OS X, Linux and BSD



Click Here To Download the Free Audio Editing Software - Audacity