Issues with audio output on performance mode. Will tip lol

I just got my first controller (complete noob). I want to play my tracks via Apple Music since that where my music collection lives at the moment. It’s all been uploaded into rekordbox and I read that it needs to be in performance mode. When I switch to performance mode, the audio only comes through my Mac speakers. When it’s in export mode, the audio comes through my studio monitors. I understand that if I buy all the music and load it onto a usb I’ll be fine, but that’s a whole project.

Does anyone know how I can just use my Apple Music library in the interim while I buy my music?