Audio server using Raspberry Pi

Needing help setting up an audio server to send audio over a network using Raspberry Pi, transmitter will use usb sound card mic line and looking to pull audio off of the network with other pi’s. Have 2 pi’s set up now with teamviewer and audio and speakers set up on my network. Will need to support 6 or more receivers on the same network. Units will need to autorun, not fall asleep and will not normally have monitors. I have seen a few ways to do this with sox and pulseaudio but have not had any luck.