Very kind of you to share, @andythompson, thanks!
This is one thing I’ve never been able to succeed at, no matter how many times I try setting VLC’s conversion parameters to match the supported formats:
EDIT — Initial set-up trouble and solution, for (the benefit of?) anyone else who tries and struggles:
However, I just downloaded your app(let?) and encounter this when I try to use it:
M1 Mac Studio, Mac OS 14.6.1, Automator 2.10
Should this be “plug and play” (assuming ffmpeg’s installed, I mean)? Is this a general Mac OS Privacy & Security setting that I can’t find?
ADDENDUM: Actually I got past the Automator issue…somehow. (Basically I quit Automator and then your file could be recognized.)
But…looks like I am in a bit over my head in terms of installing things like FFmpeg. Apparently I have now installed the Intel version 7.0.2 on my M1 Mac… 
.
| EDIT:
Aha! 
In Automator’s Get Info window I told the Mac to launch Automator in Rosetta.
| /EDIT
And I’m getting another error:
I feel like such a newb. I’ll try not to take Dante to heart and abandon all hope when I press enter here.
As a non-“power user” used to being coddled by software installers that take care of everything for me, I ignorantly misunderstood that “installing” FFmpeg simply results — as far as I can tell — in the addition of a (Mac Terminal) Unix Executable File.
|EDIT
“How I Got It Working,” by Judd Danby:
In my case, the FFmpeg file was placed in my default downloads folder, as shown in the second line in terminal:
Last login: Sat Aug 17 13:48:50 on ttys000
judddanby@Mac-Studio ~ % /Users/judddanby/Downloads/ffmpeg ; exit;
To make Andy Thompson’s automation work:
I copied and pasted /Users/judddanby/Downloads/ffmpeg into his script:
Voilà! WAV files dropped on the Automator application convert!