AFAIK Kodi can use pulseaudio and probably pipewire. I use Kodi too on those computers and I just leave it to use the default PA device that I’ve set. I switch the default devices with pasystray.
What’s usually breaking for me is paprefs. Every so often after an upgrade, the options are greyed out and I can’t share or access my devices over the network.
I never tried to setup simultaneous output before because I just switch from device one to another, but I just enabled it in paprefs and it’s working too.
Oh they’re not suing anyone for a change. I guess they have the means to give some of that money away now.
I still remember them from the times they threatened to sue their fans for not buying their music.