Abstract: A method for providing an application list depending on an external device connected to a mobile device is provided. The method includes displaying a plurality of first shortcut keys for executing a plurality of first applications, on a display of the mobile device, determining whether the mobile device is connected to an external device, if the mobile device is connected to the external device, displaying on the display at least one second shortcut key for executing at least one second application, with which the external device can be used, among the plurality of first applications, determining whether the second shortcut key displayed on the display is selected, if the second shortcut key is selected, executing a second application corresponding to the selected second shortcut key in the mobile device, and displaying execution results of the second application on the display.

Abstract: A sound source search system is capable of searching for a sound source using map information. If particular area information among the map information is selected, a sound source search client requests sound source tag information and sound source information associated with the selected particular area information. A sound source search server delivers the sound source tag information and the sound source information to the sound source search client in response to the request. The sound source search client displays one or more sound source tags corresponding to the particular area information on a screen based on the sound source tag information and sound source information received from the sound source search server.