Apple's Safari is notoriously unable to deal with anything in the ogg container (see also T68722). On the page https://en.wikipedia.org/w/index.php?title=XDR_(audio)&oldid=1155758294, it is evident that the VideoJS player invoked by [[File:...]] get correct transcoding assignment with mp3, but the plain links invoked by [[Media:..]] point to an ogg, which is not supported by the browser.
As unfortunate as it gets, Apple browsers occupy at least 20% of the total mobile + desktop market. We need something that goes beyond a "direct file link" currently done so things can just work.