Running the new Armbian release (23.5.1), and everything seems to work. At least the problems I was having seem to have gone away. I JUST installed it and tested it, so consider this about half an hour of testing. But WiFi works fine as far as I can tell (no idea yet if it stays up reliably over time), and audio through HDMI works fine (listening to it now!). Bluetooth might work and seems to get much farther. In the last release, Bluetooth would just crash if you clicked it, but now it pops up a window, and my mouse shows up. I only have one mouse, so if I switch it to Bluetooth mode, I can't click the button to confirm it! I'll look around for another Bluetooth item, but it looks like it might work. At least it's not crashing. And the stuff that worked before is still working, so it seems. So this is quite a release for the Orange Pi 800. To be clear, I am using the Cinnamon version of the "Orange Pi 4 and LTS" image.
Okay, still exploring as I write this post...
Going to sleep and waking up again left me with a garbled monitor image. Unplugging the monitor and plugging it back in instantly fixed it. This would happen in the last release as well, and I just disabled sleep. This only happened with the native Orange Pi monitor, other monitors did not show this behavior, so perhaps it's a problem with the monitor.
I will test this further.
Okay, tested Bluetooth further, but not the sleep/monitor issue (I'm back), and Bluetooth works fine. Side note: In the last version of Armbian, one of my USB ports didn't work. It was the rightmost one looking down on the unit. It still doesn't work, so perhaps that's a hardware problem.