Roon control by node-red.
This node is a wrapper for the roon node.js API.
generally it is something like http://192.168.50.115:1880/ ==> you need to replace 192.168.50.115 by the IP address of the device running meta and node-red).
copy paste this into the filename: https://raw.githubusercontent.com/jac459/roon-node-red/main/roon-flow.json
Congratulation, you are done.