14. A contents management apparatus, comprising: an interface unit configured to connect to at least one external device; a touch screen configured to display at least one first graphical user interface object representing at least one external device connected to the contents management apparatus and second graphical user interface objects representing contents stored in the at least one connected external device; and at least one processor control unit configured to: receive a selection of a first or second graphical user interface object of the displayed first and second graphical user interface objects; detect an input drag of the selected graphical user interface object; filter, in response to detection of the input drag, the displayed first and second graphical user interface objects based on one or more attributes associated with the dragged graphical user interface object; and cause the touch screen to display, in response to filtration of the displayed first and second graphical user interface objects, a filtered set of graphical user interface objects, wherein causation of the touch screen to display the filtered set of graphical user interface objects comprises the at least one processor being configured to: detect a drag of a search object comprising a keyword to an area, the area comprising a display of the first and second graphical user interface objects; check metadata associated with the first and second graphical user interface objects displayed in proximity to the search object; and cause the touch screen to display graphical user interface objects stuck to the search object, the stuck graphical user interface objects comprising metadata comprising the keyword.
14. A contents management apparatus, comprising: an interface unit configured to connect to at least one external device; a touch screen configured to display at least one first graphical user interface object representing at least one external device connected to the contents management apparatus and second graphical user interface objects representing contents stored in the at least one connected external device; and at least one processor control unit configured to: receive a selection of a first or second graphical user interface object of the displayed first and second graphical user interface objects; detect an input drag of the selected graphical user interface object; filter, in response to detection of the input drag, the displayed first and second graphical user interface objects based on one or more attributes associated with the dragged graphical user interface object; and cause the touch screen to display, in response to filtration of the displayed first and second graphical user interface objects, a filtered set of graphical user interface objects, wherein causation of the touch screen to display the filtered set of graphical user interface objects comprises the at least one processor being configured to: detect a drag of a search object comprising a keyword to an area, the area comprising a display of the first and second graphical user interface objects; check metadata associated with the first and second graphical user interface objects displayed in proximity to the search object; and cause the touch screen to display graphical user interface objects stuck to the search object, the stuck graphical user interface objects comprising metadata comprising the keyword. 18. The contents management apparatus of claim 14 , wherein the at least one processor is further configured to: receive information corresponding to an input drag of a graphical user interface object of the filtered set of graphical user interface objects; determine an input drag direction based on the information; and filter the filtered set of graphical user interface objects based on at least one attribute associated with the input drag direction.