Sonos is a good route. Powered speakers you can control on your phone. Place as many speakers in different rooms as you want and play different music in each space. Very simple. I helped my neighbor set this up in his house. His wife has stereo in her art room, he has a living room stereo and lastly a stereo on his covered outdoor patio. He also bought stands for the smallish speakers. He started with one pair, then two, finally three and told me he couldn’t be happier.
