pulseaudio streaming requires module-zeroconf

Hello, I am trying to stream audio from my workstation to a rasp pi using pulseaudio. I believe I have most of it figured out but need module-zeroconf-discover for the client side which will allow pa to see the sound server. It appears most other distros provide this module as a package but not locating for Slack 64 current.

1. Does anyone know where I might find this module - i.e. is it provided by some other package perhaps?
2. Is there a better way to stream sound from slack to another devicethan pulseaudio?