Audacity 3.1.3

Audacity

Audacity is a free, open source digital audio editor and recording application. Edit your sounds using cut, copy, and paste features (with unlimited undo functionality), mix tracks, or apply effects to your recordings. The program also has a built-in amplitude-envelope editor, a customizable spectrogram mode, and a frequency-analysis window for audio-analysis applications. Built-in effects include bass boost, wah wah, and noise removal, and the program also supports VST plug-in effects.

You can use Audacity to:

Record live audio.
Record computer playback on any Windows Vista or later machine.
Convert tapes and records into digital recordings or CDs.
Edit WAV, AIFF, FLAC, MP2, MP3 or Ogg Vorbis sound files.
AC3, M4A/M4R (AAC), WMA and other formats supported using optional libraries.
Cut, copy, splice or mix sounds together.
Numerous effects including change the speed or pitch of a recording.
Write your own plug-in effects with Nyquist.
And more! See the complete list of features.

Audacity 3.1.3 is a patch release. It improves the following aspects:

Improved performance. Loading in projects especially should now be up to 50x faster compared to 3.1.0. #2121 #2087 #2065 #2267
Added snap guides when resizing clips #2066
Added new shortcuts for looping: Shift+L for "Set Loop to Selection", Shift+Alt+L for "Clear Looping Region" #2209
Added a new selection region indicator in the timeline (identical in function as the one found pre-3.1, but with updated visuals) #2067
Changed error messages to look less like a crash report #2178
Re-added the Quick Play indicator (green triangle and line) that got lost during 3.1.0 development #2122
Fixed Play-at-speed not updating the playback speed dynamically #2149
Fixed looping regions being created unintentionally when attempting to use Timeline Quick Play #2182
Fixed looping sometimes playing the wrong audio #2103
Fixed a bug that could cause data-loss when joining multiple clips #2226
Fixed scrub preview visibility #2294
Fixed a bug when trying to locate FFMPEG manually #2282
Fixed a glitch with Loop Playback #2314
Fixed a crash and a macOS-specific bug when renaming sync-locked clips using a dialog box. #2199, #2198
Fixed a crash when releasing a clip handle #2147
Fixed a freeze when closing Audacity with the logging window open #2114
Fixed a crash when loading a saved project using certain compilers #2216
Fixed a crash on paste after running macros #2021
Fixed a crash when cancelling a nyquist prompt #2239