Using SOX on macOS

Apple’s GarageBand is a terrific app for recording podcasts and audiobooks on a Mac. It’s free, easy to use, and very stable, and uses many of the underlying technologies in Apple’s Logic. You can even hack it to do punch-and-roll editing with a custom keyboard shortcut.

However, Apple makes GarageBand for musicians rather than narrators and podcasters. As such, it lacks two features many narrators use to produce podcasts and…