Use Multiroom Audio to Fill a House with Sound
If you have more than one Amazon Echo, link all your speakers together to hear music, podcasts and radio stations no matter where you are at home.
Connect all your speakers to your Alexa smartphone app. Now scroll to the bottom of the Settings area inside the app and tap on Multi-Room Music. Group your speakers together and you’re all ready to stream. Just tell Alexa to play music on the group you created.