Thanks for the replies everyone, will check out the links and go through my options.
I was going to go with the speakers below as they are moisture resistant and one zone will be in the ensuite bathroom. Was going to put 6" in the bathroom and 8" in the great room.
https://www.amazon.ca/Polk-Audio-RC6...eiling+speaker
The wiring for the speakers all terminate in the basement furnace room. So would I connect one amp to a pair of speakers, and the chromecast would also connect to the amp? Don't know much about audio stuff as you can tell
I have an android so chromecast should be fine for myself, however my wife is using an iphone, can she still control music on spotify with chromecast?