A method for setting a section of a multimedia file in a mobile device, the method comprising: selecting a multimedia file; playing the selected media file; displaying a current play position along a progress bar according to the playing of the multimedia file; indicating a total play time of the multimedia file on the progress bar; activating a section selection function of the multimedia file while the selected multimedia file is playing; displaying, in response to the activation of the section selection function, a section selection mark, wherein the section selection mark comprises a start mark indicating a start position of the section and an end mark indicating an end position of the section and is displayed on the progress bar; and selecting a section of the multimedia file by moving the section selection mark along the progress bar, wherein the displaying of the section selection mark includes: outputting a time display box that represents time information corresponding to a position of the start mark and a position of the end mark when the section selection function is activated; and fixing the start mark at a first position corresponding to the current play position when the section selection function is activated and moving the end mark by updating a second position of the end mark according to the playing of the multimedia file while the selected multimedia file is playing and fixing, if a stop playback event is inputted while the section selection function is activated, the end mark at the current play position. selecting a multimedia file; playing the selected media file; displaying a current play position along a progress bar according to the playing of the multimedia file; indicating a total play time of the multimedia file on the progress bar; activating a section selection function of the multimedia file while the selected multimedia file is playing; displaying, in response to the activation of the section selection function, a section selection mark, wherein the section selection mark comprises a start mark indicating a start position of the section and an end mark indicating an end position of the section and is displayed on the progress bar; and selecting a section of the multimedia file by moving the section selection mark along the progress bar, wherein the displaying of the section selection mark includes: outputting a time display box that represents time information corresponding to a position of the start mark and a position of the end mark when the section selection function is activated; and fixing the start mark at a first position corresponding to the current play position when the section selection function is activated and moving the end mark by updating a second position of the end mark according to the playing of the multimedia file while the selected multimedia file is playing and fixing, if a stop playback event is inputted while the section selection function is activated, the end mark at the current play position. outputting a time display box that represents time information corresponding to a position of the start mark and a position of the end mark when the section selection function is activated; and fixing the start mark at a first position corresponding to the current play position when the section selection function is activated and moving the end mark by updating a second position of the end mark according to the playing of the multimedia file while the selected multimedia file is playing and fixing, if a stop playback event is inputted while the section selection function is activated, the end mark at the current play position.