I think you're correct with your analysis, and AirPlay service was killed at some point:
2023-08-03 15:12:12.406 T:1109 debug <general>: AIRTUNES: AirPlay not running - stopping playerI've sent a message to the devs. It seems to be a bug.
Da Flex Sorry, but I thought that I should follow the recommendation of the forum to open a new thread rather than reply to this old one.
That's to avoid discussions about outdated software environments.
Posting the same issue for the same software environment makes no sense.
In your case, the LE updates didn't changed things, so you can stay on the same thread.
Once it occurs again, do I use the LibreElec Log export that gives me an ix.io link? Or is there a different way?
When the issue occurs again, login by SSH, run pastekodi, and post the resulting link.
To avoid the debug HUD, you can also use advancedsettings.xml to activate log level 2.
jazzlpunk No double posts please.
Comment out these lines:
rocktobe Please don't kidnap other threads for double posts.
There are several methods for Kodi RC.
Perfect! For modern setups we usually suggest to use an external sound card, because internal analogue audio is so bad.
Now you have redneck video and HiFi audio. 
Add dtoverlay=hifiberry-digi to config.txt.
I understood that the only way to edit a file is via the pi console and a sudo command.
I've separated your post from a x86 Generic thread. Now you talk about "pi console". What's your hardware?
"sudo command" doesn't exist on LE.
Here is the space allocation; /storage only has 3.5M available and that is too small for an .img file
Are you familiar with GParted? That tool is able to resize partitions.
This is a nice case for the RPI: Cooler Master Pi Case 40
Sure, but the UI is laggy in 24 FPS and especially the mouse cursor.
Select a lower resolution (1080p) on the GUI settings. LE will temporary switch to higher resolutions at playback time.
The resolution changed to 3840x2160 with 24Hz refresh rate. When I tried to change it to 60 FPS in the code but it didn't do anything, still 24FPS.
For what? 4K material usually doesn't provide 60FPS.
PS: Read the RPi release notes.
Argon One is known for poor production quality. Try without the case.
kajfux No more double posts please.
