Hello again,
Respectfully, the take-away here IMHO as a Flirc newbie is: there are two conflicting sets of installation instructions provided by Flirc.
https://docs.flirc.io/flirc-usb/Installation/Linux Installation Guide/
https://flirc.tv/pages/flirc-usb-linux-downloads
The first & most obvious starting point should be (ideally) updated, or removed. Unsurprisingly, I went to the first because it's the "Linux installation guide"! but it's outdated. I didn't catch there was a second set of instructions at the bottom of the download page, because I just looked for the download link thinking I already had the instructions. That failing, I jumped into the forum and here we are. If the instructions were in the obvious place (1), I would have been set up in minutes and you both could have been spared meeting me ;)
Thanks for your help. Now that I have it set up, I'm very pleased with it.
Happy holidays & best wishes for the new year.
Andrew