A mobile terminal, comprising: a display; and a controller configured to: cause the display to display a playback screen of a first multimedia file; cause the display to display a first retrieval screen (530, 630, 730, 830, 930, 1030) in response to receiving a first user input during the displaying of the playback screen of the first multimedia file, wherein the first retrieval screen includes a plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948) respectively corresponding to one of a plurality of playback points in time on a per first time interval basis of the first multimedia file; and cause the display to play the first multimedia file beginning at a playback point in time that corresponds to a selected one of the plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948), characterized in that the first retrieval screen (530, 630, 730, 830, 930, 1030) further includes a reduced playback screen (550, 650, 750, 850, 950, 1050) of the first multimedia file, wherein, while the first file is being played back in the first reduced playback screen (550, 650, 750, 850, 950, 1050), the controller controls the thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948) displayed in the first retrieval screen (530, 630, 730, 830, 930, 1030) to also be played back from their respective playback points for a time corresponding to the playback time of the first file. a display; and a controller configured to: cause the display to display a playback screen of a first multimedia file; cause the display to display a first retrieval screen (530, 630, 730, 830, 930, 1030) in response to receiving a first user input during the displaying of the playback screen of the first multimedia file, wherein the first retrieval screen includes a plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948) respectively corresponding to one of a plurality of playback points in time on a per first time interval basis of the first multimedia file; and cause the display to play the first multimedia file beginning at a playback point in time that corresponds to a selected one of the plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948), characterized in that the first retrieval screen (530, 630, 730, 830, 930, 1030) further includes a reduced playback screen (550, 650, 750, 850, 950, 1050) of the first multimedia file, cause the display to display a playback screen of a first multimedia file; cause the display to display a first retrieval screen (530, 630, 730, 830, 930, 1030) in response to receiving a first user input during the displaying of the playback screen of the first multimedia file, wherein the first retrieval screen includes a plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948) respectively corresponding to one of a plurality of playback points in time on a per first time interval basis of the first multimedia file; and cause the display to play the first multimedia file beginning at a playback point in time that corresponds to a selected one of the plurality of thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948), characterized in that the first retrieval screen (530, 630, 730, 830, 930, 1030) further includes a reduced playback screen (550, 650, 750, 850, 950, 1050) of the first multimedia file, wherein, while the first file is being played back in the first reduced playback screen (550, 650, 750, 850, 950, 1050), the controller controls the thumbnail images (541;...;548, 741;...;748, 841;...;848, 941;...;948) displayed in the first retrieval screen (530, 630, 730, 830, 930, 1030) to also be played back from their respective playback points for a time corresponding to the playback time of the first file.