Hi, I need to figure out how to best cable up the combination of my kit. I'm trying to avoid having to replace my existing home theatre sound system. I originally had the following: 42" Sony Bravia TV (did not support ARC, used digital output) Sony BDV-E4100 Home Cinema (recent purchase, before I decided to replace the TV) I used the HDMI for video, and digital in for audio, worked fine. I have recently purchased the following kit: 55" LG OLED B7V TV (4k, supports Dolby Atmos) Sony UBP-X700 Blu-ray Player (4k, supports Dolby Atmos) As I understand it, Dolby Atmos is not supported over a digital cable, only over HDMI. The TV has plenty of HDMI ports, and supports ARC. The Blu-ray player has an A/V HDMI port, an audio only HDMI port, and a digital output. The sound system has only one A/V HDMI port and a digital input. How do I best setup the sound for all this? Can I get the Dolby Atmos to work from both the Blu-ray player and the TV through the sound system? Regards, Rob.