Apologies in advance for what may a stupid question!
I’ve just managed to get hold of a Chromecast Audio device. I want to be able to play the music ripped onto my UnitiServe on a little Onkyo DAB music centre situated in my garage, within effective WiFi range of my home network. I have installed the Google Home App on my iPad, which has found the device attached via Aux 2 to the Onkyo. Does anyone know what I need to do to make my music store visible to the App, so that I can ‘cast’ it? (If indeed it’s possible at all).