hi @madmoses before you follow my guide, maybe I can help. I have had some experience with PulseAudio + Kodi now…
I have some questions:
can you tell me exactly what you do to play a file? Do you mean you play it through Kodi?
You say you do not hear it through SPDIF. Could the sound be played through another audio device, e.g. HDMI?
Can you check for me the settings of Kodi -> Settings ->Audio -> Audio output device? Verify it is set to ** ALSA: Playback/recording through the PulseAudio sound server (step 4 of my guide)
You might want to do step 5-2 as well; explicitly setting a default sink. Though as BT works it doesn’t seem to be necessary for you (it was for me)