A sound output control device is disclosed. The sound output control device includes an application information acquisition section and a control section. The application information acquisition section is configured to acquire application information from an external device having multiple applications for sound output. The control section is configured to process audio data streamed from the external device through causing the external device to start one of the multiple applications. The control section has a predetermined selection criterion to select a start-candidate application from the plurality of applications. The control section is further configured to select the start-candidate application according to the application information acquired from the external device and the predetermined selection criterion, and cause the external device to start the selected start-candidate application.