Audacity allows you to record sounds, play sounds, import and export WAV, AIFF, and MP3 files, and more.

Built-in effects include Bass Boost, Wahwah, and Noise Removal, and it also supports VST plug-in effects.

Use it to edit your sounds using Cut, Copy and Paste (with unlimited Undo), mix tracks together, or apply effects to your recordings. It also has a built-in amplitude envelope editor, a customizable spectrogram mode and a frequency analysis window for audio analysis applications.

Requirements:

· LAME MP3 Encoder Library
· at least 64 MB RAM and a 300 MHz processor

What's New in This Release: [ read full changelog ]

Bug fixes for:
Crash, slow launch or excessive CPU/memory use arising from automatic VST support:
· VST instrument plug-ins should now be correctly ignored
· VST effects now scanned only at start of first session that detects them, then cached; effects are now not loaded or opened until needed
· New "Effects" tab in Preferences to enable/disable VST effects and enable VST rescan on next launch
· Default View Mode now works
· Chains now always apply their stored parameters rather than those last used in Effect menu
· Non-MP3 files imported via drag or Recent Files caused crash if filter in file open window set to MP3
· AAC exports (using the optional FFmpeg library) were silenced
· Generating audio always fitted the project in the window; fit now done only if generating in new track
· View menu items/shortcuts incorrectly disabled when playing or recording
· DTMF generator defaulted to zero duration on open
· Unwanted interactions between linked audio and label tracks
· (Windows XP) Failure to launch on some machines due to "incorrect configuration" issue
· (Windows) Crash importing a stereo file while a screen reader such as JAWS is running
(Mac OS X):
· Audio Units effects applied to all tracks in project even if not selected
· QuickTime importer now handles files greater than 16-bit or 64000 Hz
· Various other interface bugs

Improvements:
· Compressor: new option to compress based on peaks, improved attack and decay time support
· Mixer Board: improved design, more responsive meters and now interacts fully with Track Panel in main window