But I asked the question for when I get my full setup back. I have an custom server built by a friend:
https://paretoaudio.com/
sorry to hear about the house. That is really horrible and unfortunate.
because there are many ways to stream a laptop YouTube video audio to your server/streamer 2-channel system, without knowing your future setup from hardware to software, it’s just really hard to answer your question.
I tried looking at the Pareto Audio website but I really couldn’t figure out what hardware or software they use.
so I think your best bet is to just tell your friend you’d like to also stream YouTube videos in your system and make sure that when he builds the server, it’s compatible for that functionality with your 2-channel stereo system.
But the generic answer to your question is that you can use AirPlay or chromecast or some software like JRiver to capture the audio from the YouTube video stream and send it to the streamer/server.
good luck with the house and the stereo setup. I’m sure once everything is back to normal, you’ll be able to enjoy life and music tremendously again.