Connecting Genie 4k mini to projector - DirecTV

I'm looking for suggestions to connect my 4k Genie mini to an Epson Powerlite W7. I want to use the HDMI out from the Genie to the projector, then use the optical audio out from the Genie to my surround sound receiver. What cables will I need to do this?

This question, "Connecting Genie 4k mini to projector," is about DirecTV channels, programming, equipment, and sports.

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