Robustness of Pi-Musicbox in case of hard power-off

Hello. I’m using musicbox for one month now (after testing Volumino and RuneAudio) and I am very satisfied. Just a question regarding switching off: is the Music-Box-System a “read-only” one? If not, how can this be enabled?

I use a raspberry pi with a vintage tube radio and if the radio is not running I wanna switch of everything with the switch of a multiple socket. Sometimes we just forget to power down the raspberry…

Thank you all.