Abstract: A first content output device (e.g., speaker) may include a communication interface, an output unit, and a processor. The first content output device, upon receiving a request, selectively transmits audio content to an external content output device (e.g., speaker) via two different networks. While the external content device is buffering the audio content received from the first content device via a first network, the devices are setting up for connection via a different second network. When the setting for connection between the device via the second network is completed, the first content output device switches to transmitting the audio content to the external content output device via the second network.

Abstract: A content output device is disclosed. The content output device may include a communication interface comprising communication circuitry, an output unit comprising output circuitry and a processor configured to control the output unit to output a content received from an external device through the communication interface, to control the communication interface to transmit, in response to a output request of the content being received from the external device via a first communication network, the content to an external content output device via the first communication network, and to control the communication interface to transmit, in response to completion of setting a connection with the external content output device via a second communication network, the content to the external content output device via the second communication network.