I haven't even bought a Raspberry PI device (or multiple) but hoping you can at least point me to the right direction so I can read up about it and get some more specific advice
We have bought a house which has c-bus smart house wiring (Square 4 I think it's called in US) integrated into it along with a "no-longer-working" Clipsal/C-Bus Audio matrix device along with 5 amplifier units integrated into this setup. I can only assume this thing originally distributed sound around the house to 5 different rooms which have built in audio speakers into the ceilings via some of the c-bus remotes.
Anyway, I am now keen to sacrifice this existing audio matrix unit and amps setup and replace with a Raspberry PI unit. I have seen some basic info about it and some youtube videos. More specifically, we use Spotify and I've seen there are a couple of ways to set this up. My question is, will I need 1 RPI or is this a case of having to buy 5 (or 6) of them and almost replicate what was originally set up (albeit taking up much less real estate on my server shelves....). I guess the entry level goal is to be able to bring up Spotify on my phone and select 1 or more rooms to play the music on. I fully appreciate that this will no longer be integrated into the c-bus system (but it isn't really now anyway!)
Any advice really appreciated......