A user terminal device comprising: a network interface unit configured to connect to a network; a storage unit configured to store content; a control unit configured to operate in a local mode to search for content from the storage unit or a network mode to search for content from the network in response to a user's selection, and a display unit configured to display a local mode User Interface, UI, or a network mode UI in accordance with whether the control unit is operating in the local mode or the network mode, respectively; wherein the control unit is further configured, in response to selection of the network mode, to: search for content in devices (10; 20; 30; 40) connected to the network; in response to a selection of a content category from an information area of the network mode UI, control the display unit to display at least one thumbnail image corresponding to at least one content of the selected content category stored in the storage unit via the network mode UI; control the display unit to display a thumbnail image of device icons representing devices (10; 20; 30; 40) in which new content of the selected content category is stored, and additionally display a Graphic UI, GUI, image over one of the new device icons indicating the progress of gathering new content to the device, while sequentially gathering content information relating to the new content items via the network; and control the display unit to sequentially replace each device icon with one or more icons corresponding to the respective content items provided by the device when a gathering operation for the device is complete. a network interface unit configured to connect to a network; a storage unit configured to store content; a control unit configured to operate in a local mode to search for content from the storage unit or a network mode to search for content from the network in response to a user's selection, and a display unit configured to display a local mode User Interface, UI, or a network mode UI in accordance with whether the control unit is operating in the local mode or the network mode, respectively; wherein the control unit is further configured, in response to selection of the network mode, to: search for content in devices (10; 20; 30; 40) connected to the network; in response to a selection of a content category from an information area of the network mode UI, control the display unit to display at least one thumbnail image corresponding to at least one content of the selected content category stored in the storage unit via the network mode UI; control the display unit to display a thumbnail image of device icons representing devices (10; 20; 30; 40) in which new content of the selected content category is stored, and additionally display a Graphic UI, GUI, image over one of the new device icons indicating the progress of gathering new content to the device, while sequentially gathering content information relating to the new content items via the network; and control the display unit to sequentially replace each device icon with one or more icons corresponding to the respective content items provided by the device when a gathering operation for the device is complete. search for content in devices (10; 20; 30; 40) connected to the network; in response to a selection of a content category from an information area of the network mode UI, control the display unit to display at least one thumbnail image corresponding to at least one content of the selected content category stored in the storage unit via the network mode UI; control the display unit to display a thumbnail image of device icons representing devices (10; 20; 30; 40) in which new content of the selected content category is stored, and additionally display a Graphic UI, GUI, image over one of the new device icons indicating the progress of gathering new content to the device, while sequentially gathering content information relating to the new content items via the network; and control the display unit to sequentially replace each device icon with one or more icons corresponding to the respective content items provided by the device when a gathering operation for the device is complete.