@sdetweil well thats weird… I don’t even get output if I run a speaker test.

Hi everyone, I am relatively new to the MagicMirror and have a problem, maybe someone can help me.
I have the MagicMirror running. It runs out of the box as it should. However, I can no longer play music. I play music from my iPhone via Shairport Sync (https://github.com/mikebrady/shairport-sync). Without MM, the whole thing runs perfectly, but when I now install the MM on the RaspberryPi, I can no longer hear the music. Does anyone know what is going wrong in the background?

I have a RaspberryPi 4 8GB and the sound is transmitted via HDMI.