Synchronized playback of audio information received from other networks

A playback device, a playback device group, and a method for operating and grouping playback devices to cause playback devices in the playback device group communicating over a first network to play back audio content received via a second network are disclosed herein. 本文公开了回放设备、回放设备组、以及用于操作回放设备并将其分组以使通过第一网络进行通信的回放设备组中的回放设备回放经由第二网络接收的音频内容的方法。