Multi-room Audio Over Network

Volumio Version:2.861
Hardware: Raspberry Pi 3 Model B, External speakers with headphone output connection

I’m new to volumio and interested in trying to get into multi-room setup, I’m trying to set up a two room audio system, where the speakers connect to the pi over network, what equipment and program would I need to achieve this? Thank You

See the answer to your other (almost) identical post. (Hi & welcome btw Rafael)