On the High res streaming service as long as you use something like Spotify or Amazon etc and then stream to a decent speaker then the quality is excellent, the quality of the sound usually depends in this scenario on the quality of the speaker.
Based on the ops current practices I’d doubt she’s a purist.
Op why not buy yourself a little Amazon echo, they are only about twenty quid, ans then subscribe to a streaming service, you can even do it for free. See how you get on.
It’s so simple. Say you want to listen to Bruce Springsteen, you type him in the search bar and every song ans album he’s ever recorded and his concerts come up, you can then either just play, like or download if you want anything available off line.
You can then create playlists, which are the modern day version of mix tapes, you literally tap on the dots and add to playlist or create one.
So for example I have a chill out play list, a slow one, a party one, a dinner party one, a fave songs one, and eighties songs one. You then just tap on your library and play your playlist.
Or with Alexa you just tell her to play whichever song pops into your head and she will play if for you.