Just like the topic suggest I have been having some issues witht he Rasp Pi 3 Model B in conjunction with Rune Audio.
When I go to the bathroom and turn on the light, the playback stops.
At first I thought its just a magic co-incidence when it happened the first time.
After this I had the "spinning circles" and also a notification stated that the "audio output changed" and it was posted 3-4 times.
And if I check in settings, Indeed the source was changed to Rasp-Pi Analog instead of my external DAC.
My setup to my Pi is
External 2.5" HDD running on power from Rasp.
External DAC via USB.
I now suspect that I might have a power-issue with the Pi.
The power-adapter to the Pi was sold together as a complete kit.
Its 5V, 2A.
EDIT: My Mistake, its 5V, 2.5A
Anyway, after the spinning circles, its impossible to restor the playback.
I need to reboot it, usually twice.
Also if I try to browse the artists when I have the spinning circles, there is no folders any more.
Thank you for your time,
Dcode