Now back to the apostrophe. My guess is you are seeing the Denon have problems with the Unicode version. Denon probably expects ASCII.
Quick fix: Options \ Metadata and TICK "Convert Unicode punctuation characters to ASCII"
Now the prettified ’ will go back to a keyboard version. Just like when you type in MS Word, MB’s database uses slightly fancy versions punctuation. Your Denon probably wants more “normal” versions like on your keyboard. (See also speechmarks, hyphens, elipses)
Excellent!! Thank Picard and the devs for being clever and so tweakably adjustable to cover everything.
That punctuation setting was flipped in the latest v2.7 and turned off that ASCII default. Your post will now help other people who search DENON on here. Likely this will catch out a few other users of different media players.
I think your Denon just had a janky font for showing Unicode apostrophe’s. Other players can just put up unknown square blobs.
Perfect double check. That tick is only changing a sub-set of punctuation. It leaves characters alone. I think your Denon probably has a slightly different use for that Unicode apostrophe U+02BC as it had one, just looks a bit janky on the display.