A control device includes a communication unit communicating via a network with a content supply device and reproduction devices, an operation unit, a display unit, and a control unit receiving a signal from the operation unit and controlling the communication unit and the display unit. The control unit has a content list display state displaying on a screen of the display unit a content list received from the content supply device, a device list display state displaying on the screen thumbnail images of the reproduction devices in accordance with device information received from the reproduction devices, and an operation panel display state displaying an operation panel for having a content item of the content list reproduced by one of the reproduction devices set in the device list display state. The thumbnail image of the reproduction device is displayed in the content list display state and the operation panel display state.