Connecting a projector with soundsystem?

I have an optoma hd29h an xbox one x 1tb and a logitech z906 sound system.

How do I connect the projector to the sound system?

Does the xbox have to be paired with the soundsystem and hanged to the beamer via HDMI cable?

Or is there a direct connection sound system beamer?

Google time or look at ytb

I've been googled, well. But thanks for the tip