A clue:
Today I tried one of the books on ios, and had the usual “no sound”. For grins, I tried turning bluetooth ON, and heard chords coming from a distant bluetooth speaker that I had been using to stream youtube music several days ago.
Other than “forgetting” a device in settings, (and needing to re-pair later) is there a way to get HT to forget ancient BT connections that it may or may not have ever used?
note: This has not been a problem using youtube, embedded youtube, facebook, podcasts, etc, just HT.
Update: I currently have working audio on ios.
I have sound, and it is not garbled!
I am not going to touch anything until I finish the 2 books, then I will try to figure out steps to reproduce the problem.