Audacity is the most comprehensive free cross-platform editor that I have tried. WavePad is another excellent audio editing software for Windows and macOS that is free for non-commercial use.

Audacity is one of the best free audio editing / audio editing software, easy to use and multi-platform support, including Windows, Mac, Linux. It is an ideal choice for recording interviews, dubbing, ...

The video editing software is free for all Mac users, and if you’re curious ... Can you pull in footage and audio from multiple files, swapping between them as needed, or will you need to ...