Audacity
Audacity is an easy-to-use audio editor and recorder for multiple platforms. Audacity can be use to record live audio, cut/copy/splice and mix sounds, convert tapes and records into digital format, edit Ogg Vorbis, MP3 and Wav sound formats, change the speed or pitch, add effects to a recording and loads more. Audacity also has the ability to add plug-ins for more functionality and enhancements.
It’s Yours at (http://audacity.sourceforge.net)
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