In a Linux operating System ffmpeg is a 'terminal command'. Is that a 'console command' in Windows? It's old school computer methodology. No Graphic User Interface like Windows, or mouse clicking on buttons or clicking on links.

You type the command into the terminal and press 'enter'. Frightening stuff if you are not used to it. Plus there will be a whole load of letter options to follow the command and these all have to be letter and case correct for it to work.

On my system I did it through a GUI years ago. It was dead simple but I've now forgotten how I did it.

Tomorrow I'm going to put a new SSD in my PC and install the latest version of Linux Mint Cinnamon. There will be a lot of setting up and file transferring once it's done and setting up Audacity will be one of those tweaks. I'll be re-reading this thread then.