How to relay all audio from windows to a wireless speaker?

Question

WiFi

I bought myself harman kardon aura wireless acoustics and the question arose: how can I stream music from my computer to it via wi-fi? If you connect a bluetooth adapter to a computer and select this speaker in playback devices, lags are noticed. And through airplay in itunes (via wi-fi already) everything is fine, without brakes, but how can I then play sound on it, for example, from games, a browser, and so on where there is no airplay.
I have a computer, a speaker, and a Wi-Fi router, but I don’t have any knowledge of how to stream music from a computer. Help guys.