[RPi4] Mirror audio output to network

Hi,

I'm using Librelec on a RPI4 to play radio streams. I'd like to somehow mirror whatever goes out on the auxiliary to the speakers also on the network - ie through some software or another to open up a tcp port on the RPi so I can connect to it and listen to whatever this box plays on any other network-enabled speaker or device. Hope I make sense.

Any pointers on how to achieve this?

No, I need that whatever is played by Kodi (usually some internet radio, but sometimes a youtube playlist) to also be mirrorred/broadcasted/proxied onto the network via some protocol or another so I can pick it up with vlc/mplayer/etc on other machines.

Doesn't work for me.