Get a Smart BluRay Player, has built-in access to netflix, youtube, many services. bluray to projector, done.
BDP-S6700 Blu-ray™ Player with 4K Upscaling and Wi/Fi for Streaming Video
they make wireless and wired ones, do your research
I like wired, have a cable from Verizon router in the basement to a switch near my Home Theater: switches have ethernet in/4 ethernet out, IF you get a bluray player with ethernet in.
Or, get a bluray that receives the wireless signal from the router. Weak signal from primary router, add a router near your Home Theater rather than a switch, then the wireless signal from that router will be strong, for the bluray and anything else using wireless.
No need for computer to select streaming sources, and you either play a DVD or stream, using one remote control!!!!