1. A method for displaying content in a mobile terminal, the method comprising: displaying, on a display, a first content file list collectively including content files of a plurality of different content file types; receiving first input from a user via a first specific key of a plurality of keys while the first content file list is displayed, wherein the first specific key is associated with a first content file type of the plurality of different content file types, and wherein the first content file list is displayed without displaying on the display first information that indicates that the first specific key is associated with the first content file type; transitioning, responsive to the first input of manipulating only the first specific key, from displaying of the first content list directly to displaying, on the display, of a second content file list which only includes at least one content file corresponding to the first content file type which is associated with the first specific key; receiving second input via a second specific key of the plurality of keys while the second content file list is displayed, wherein the second specific key is associated with all of the plurality of different content file types, and wherein the second content file list is displayed without displaying on the display second information that indicates that the second specific key is associated with all of the plurality of different content file types; and transitioning, responsive to the second input of manipulating only the second specific key, from displaying of the second content file list directly to displaying of the first content file list.