Multiroom (audio) - a system for distributing sound from one or more sources in several rooms. Signal sources can be: a disc player (permanent, but not detected), I-pod, smartphone with a collection, Internet radio, industrial radio.
You can adjust the volume using wall control panels (if provided by the project), from a smartphone or tablet. The interface can be from the manufacturer or designed individually.
The sound comes from the built-in ceiling acoustics - for indoors, for outdoors - from acoustics in the form of a stone or on wall acoustic.
Over the years, multi-room systems have been built mainly on Russoundand Nuvo, I didn’t really like the result fromSpeakerCraft - their acoustics are wonderful, but not so much with control.