Patent ID: 8909362

Claim:
A signal processing apparatus comprising: a network interface configured to connect to a network; a connector configured to detachably mount an external device to the connector, the external device reproducing a plurality of content items and attribute information of each of the plurality of content items; and control circuitry configured to control the external device mounted on the connector, acquire the attribute information from the external device, the attribute information including a title of each content item of the plurality of content items, receive a reproduction request for a content item of the plurality of content items from a reproduction device via the network interface over the network, supply the reproduction request to the external device, receive the content item from the external device, the content item reproduced by the external device in response to the reproduction request, supply the content item to the reproduction device by streaming via the network interface over the network, determine that reproduction of the content item is completed when a title of a current content item has changed, and when the reproduction of the content item is completed, control the external device to stop the reproduction of the content item and notify the reproduction device via the network interface over the network that the reproduction of the content item is completed.