avedio links HDMI Audio Extractor 4K, HDMI to Optical RCA or 3.5mm Jack Audio Adapter Converter Splitter, Supports Dolby Digital DTS 5.1 PCM for PS5, Fire Stick, Blu-ray Player, Sound System

If you have a red and white RCA connection to your sound system you want a HDMI Audio Extractor. Kinda like this one: https://a.co/d/05Jh0LOX.This assumes that you have an external video source that is running all your content. If you’re using the apps in the TV it gets more complicated.

There is a better way, but it requires some equipment and setup. I have a cheap USB mixer that plugs into the computer (https://a.co/d/03VneXJP) and what is called an HDMI converter (https://a.co/d/0iBHpN2y), which will take the audio out of the HDMI signal which you can plug into the mixer. You will when set the computer speaker device to the USB mixer and plug in console's audio that you split out from the converter into the mixer. That will allow you to hear both the game audio and your computer audio at the same time. You can get more complicated with this setup for you want using something like a software mixer, like Voicemeter Banana which will allow you to run all of the audio back to your computer, so you can put it through your wireless headset, or something along those lines. I'm using a similar setup for dual PC streaming via a capture card. I have an audio cable plugged into my mixer which is routed to my headphones via the software mixer.