I hope someone can help, - or maybe I am just ignorant..?

When I have a song play with real tracks, it obviously generates the new tracks and the it just starts playing without warning.
Is there a way in which I can get it to generate the song and wait for me to press the play button before it starts to play.

I play in a church environment, and it creates either a few seconds of waiting for the song to load, and then without warning starts to play at which time I am not with it 100%