MacOS Sound Preferences won't recognize HomePod Stereo Pair

Correction on the iTunes working... I can select the stereo pair on the Mac only after it starts playing a song. And only for that song. If I select the pair before the song and hit play, it resets to default. If I select it after a song starts, the pair starts working... but only till the next song starts. Then it resets to system standards. Is this yet another example about how I wasted $7K on an iMac with more problems and security holes than an old Android phone???

I replied there, gave them an earful, but I couldn't even navigate the screens properly. It only wants to know what IOS version you're on, not MacOS, and when it says what system did you use to pair the HomePods with, of course there's no MacOS Home, only IOS. After the total fail with the iMac Pro and their refusal to acknowledge any of the systemic failures, this looks like another rat hole. I think they're going back.

Um, OK, I think I found out what the issue is. They can't figure out how to get within a second and a half delay on the audio. Trying only one speaker, everything is at least a second and a half out of sync. So they're not going to tell you they can't sync audio and video / application, right??? So don't ever look for this to get fixed. (and yes, my network and system are tuned for this...).