I purchased a DENON AVR S740H receiver and have my cable, blu-ray, turntable hooked up to it via HDMI cables and then the receiver is connected to my TV via HDMI ARC cable. For sound, the receiver has speaker wire connections to 2 Polk Rti A9 floor speakers. I also have Polk MagniFi MAX SR soundbar with wireless subwoofer and surround speakers. I want the output of sound from the receiver to also go through this unit so I can use them. Currently when I watch TV, the sounds just comes out of the floor speakers through the receiver. The soundbar doesn't have RCA input, just 3.5mm aux and 3 HDMI inputs. Any idea how I can get sound to come from my receiver and play on all of my speakers?