Please help. I am looking at cutting the cord and wondering what the set up would be with an older home theater system that has only one HDMI (out) port on the receiver? I have a newer model Epson projector with HDMI ports. The current setup is: HDMI from cable box to projector; audio cables from cable box to RCA connectors on receiver. Since the HDMI port on my receiver is (out), where would I plug the Roku device into? And how would I get sound to my speakers?