Hi mdghion,
Reluctantly, we switched all our players over to the HTML5 default audio player. The short code is very similar. Here’s the syntax.
[audio src="https://domain.com/audiofile.m4a" autoplay="yes"]
There’s a list of additional attributes here: https://html.com/attributes/audio-src/
In our case, we had over a thousand pages to update. I used a free plugin called ‘Better Search Replace’. With that plugin, I was able to update all our pages in a couple minutes.
This works well in Safari 14. So far, none of our thousands of daily visitors have complained.