Sony sound bar not working

[ltnicks2]

I had an Xbox360 hooked up to projector with Blue ray and the sound bar. Changed to Xbox one. Can't figure out how to hook it all back up to get sound from bar. (Someone else unhooked the 360 from it all) sound bar was connected to the projector with an additional hdmi to ? Assumed the 360, but the Xbox one had only one humid port. Am I going to use an optical cable?

 

[ltnicks2]

MERGED QUESTION
Question from ltnicks2 : "I have a projector that is hooked to blue ray and Xbox 360. Got Xbox one. Now can't figure out how to hook it up for sound fo"

Sound bar is a sony