Airplay 2 HomePods cinema

can I use a home pod as audio out for my freestyle 2 projector using my iPhone as source and airplay 2 - I can only achieve an official title page of the movie being projected with its audio being played from the HomePod. This is a movie purchased from Apple Store not streaming

. Help would be appreciated?

I also have lots of phones, Mac’s etc and an Apple TV in another room if they can wirelessly be brought into play somehow ?

I hope there is a way ?