Audacity 3.6.2

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 v3.6.2 release notes:

This is a patch release. It adds a "Legacy" effects section containing the old Limiter, Compressor and Classic Filters.

It also fixes the following bugs:

#6995 Fixed a hang after undoing.
#6912 Fixed the zero line going missing.
#6927 Fixed envelope appearance for clips offset from 0.
#6955 Fixed Audacity turning white on some systems.
#6857 Fixed the pitch indicator disappearing on Linux when hitting double digits.
#6941 Fixed cutting not putting clips into the clipboard.
#6926 Fixed pasting sometimes resetting the clip name.
#6751 Fixed the track header UI breaking when resizing channels in a stereo track.
#6847, #6846 Fixed LV2 plugin detection on macOS and Windows.
#3679 Fixed Labeled Audio operations.
#6924, #6989 Fixed Cloud projects sometimes not opening.
#7060 Fixed a bug regarding stereo-to-mono splitting.
#7055 Fixed a bug causing tracks with master effects sometimes only exporting silence.
#7025, #7133 Fixed multi-channel OGG and Wavpack import.
#7018 Fixed a crash after recording long sessions.
#7126 Fixed a crash when failing to load a cloud project.
#7093 Fixed Audacity maxing out the CPU when minimized.
#7124 Fixed the "editing clips can move other clips" preference desynchronizing multiple tracks.