Make the downloaded AppImage runnable.
To do this, you can right-click the file -> Properties -> Permissions
or run the following command in the terminal:
chmod +x <path to your Audacity.AppImage>
Double-click the AppImage to run Audacity.
Additionally, your Linux distribution (for example Ubuntu, Fedora or Debian) may have a version of Audacity as part of the repository. This version is typically older than the latest AppImage, but may be better integrated into your distribution.
Note: If you have trouble opening the AppImage, try installing libfuse2. Exact steps for various distributions can be found at