I have a similar setup, but with Monoprice coaxial audio cables that seem totally immune to interference, and using mixers so there's no input switching.
I have simultaneous inputs from my old analog consoles hooked up to a CRT, my OLED TV's analog out (meaning that automatically gets audio from whatever HDMI source), my turntable, and my computer.
The only switching I have is for the output: to my home theater speakers (2.1) or to headphones.
I have simultaneous inputs from my old analog consoles hooked up to a CRT, my OLED TV's analog out (meaning that automatically gets audio from whatever HDMI source), my turntable, and my computer.
The only switching I have is for the output: to my home theater speakers (2.1) or to headphones.