Spotify and radiostations without tv

My setup is RPI4, Amplituner with HDMI and Projector.
I would like to be able to listen to radiostations and spotify without turning on the projector.
Just like on headless audio distros like Volumio, everything controlled from web browser of phone app.
Is this something that can be done on OCMC / Kodi?
So far I tried to add radio stations (radio plugin) to favorites, this will work sometimes and sometimes not. Some stations won’t play this way at all. I can’t use spotify at all without the hdmi projector.
Any sugestions? Have anyone installed something like MPD along kodi on OSMC ? Or perhaps some Kodi plugins that can be used without the screen?

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