How to stream audio between OS X devices over Wi-Fi?

Question

macOS

I have a Mac with an audio system connected to it. There is also a Macbook, with which you can comfortably sit on the couch)) I would like to be able, even with some delay, but still drive the sound programmatically over a Wi-Fi network to a Mac with an audio system)))
I'm sure something this should be, but still does not come across while googling.
Those who know, tell me the options!)

Answer 1

I was wondering if Nicecast could make a radio on a Macbook and listen to it on a Mac with an audio system. But I still want to find a less collective farm solution, like I put the application there, put it here and let's go)).
Upd:
Solution found!

Answer 2

Cut off the audio system via Wi-Fi directly?)

Answer 3

Airserver.com for example. Will make a receiver out of the receiving poppy airplay. If you use tuna, then it will be more convenient.