Hi, I am in the process of upgrading my 42” Panasonic plasma tv (2007 vintage) to a new 4K, LG OLED55B7 TV with Panasonic DMP-UB900EBK Ultra Blu-ray player. I hope to retain my Denon DHT-FS3 soundbar. My present setup uses a 5 m long QED Qunex HDMI-P cable (DVD recorder/Apple TV to TV), 5 m QED Professional Coaxial Aerial cable, 5 m Profigold PGD565 TOSLink Digital Optical Audio Cable (DVD recorder to soundbar), QED Qunex 2 Stereo audio cables (TV to soundbar). All are also 2007 vintage, with the longer cables neatly running through the walls and up the chimney to the wall mounted TV/soundbar. My questions are: 1. is the present cabling able to handle the demands of the new system ? 2. will the HDMI handle both video/audio from UB player to TV ? If so, I can use a new digital optical cable between TV and soundbar. 3. if not and HDMI (UB to TV) and digital (UB to soundbar) cables are required, can I get an HDMI to stereo cable (as dont think TV has audio out stereo and soundbar doesnt have an HDMI) Many thanks for your help and advice.