Audacity 2.1.3 RC3

Audacity Is A Free, Easy-to-use Audio Editor And Recorder For Windows, Mac OS X, GNU/Linux, And Other Operating Systems. You Can Use Audacity To:

• Record Live Audio.
• Convert Tapes And Records Into Digital Recordings Or CDs.
• Edit Ogg Vorbis, MP3, And WAV Sound Files.
• Cut, Copy, Splice, And Mix Sounds Together.
• Change The Speed Or Pitch Of A Recording.
• Import And Export WAV, AIFF, AU, And Ogg Vorbis Files.
• Import MPEG Audio (including MP2 And MP3 Files) With Libmad.
• Export MP3s With The Optional LAME MP3 Encoder Library.
• Create WAV Or AIFF Files Suitable For Burning To CD.
• Import And Export All File Formats Supported By Libsndfile.
• Open Raw (headerless) Audio Files Using The “Import Raw” Command.

It Supports All Common Editing Operations, Plus It Will Mix Tracks And Let You Apply Plug-in Effects To Any Part Of A Sound. It Also Has A Built-in Amplitude Envelope Editor, A Customizable Spectrogram Mode And A Frequency Analysis Window For Audio Analysis Applications.