A display apparatus, comprising: a display unit configured as a touch screen; and a control unit configured to control the display unit to display a progress bar to provide a user with playback position information of a content which is currently being played back, using a position indicator of the progress bar; characterised in that: the control unit is configured to change a part of the content which is currently being played on the display unit in response to a touch-drag user input of touching the position indicator and dragging the position indicator along the progress bar; and the control unit is configured to display an enlarged progress bar instead of the progress bar in response to a user touch for more than a predetermined time at a location ('A') of the display unit where the position indicator of the progress bar is displayed, and to change a part of the content which is currently being played on the display unit in response to a user input of dragging the position indicator along the enlarged progress bar; and wherein the progress bar corresponds to an entire length of the content and the enlarged progress bar corresponds to a part of the entire length of the content. a display unit configured as a touch screen; and a control unit configured to control the display unit to display a progress bar to provide a user with playback position information of a content which is currently being played back, using a position indicator of the progress bar; characterised in that: the control unit is configured to change a part of the content which is currently being played on the display unit in response to a touch-drag user input of touching the position indicator and dragging the position indicator along the progress bar; and the control unit is configured to display an enlarged progress bar instead of the progress bar in response to a user touch for more than a predetermined time at a location ('A') of the display unit where the position indicator of the progress bar is displayed, and to change a part of the content which is currently being played on the display unit in response to a user input of dragging the position indicator along the enlarged progress bar; and wherein the progress bar corresponds to an entire length of the content and the enlarged progress bar corresponds to a part of the entire length of the content. the control unit is configured to change a part of the content which is currently being played on the display unit in response to a touch-drag user input of touching the position indicator and dragging the position indicator along the progress bar; and the control unit is configured to display an enlarged progress bar instead of the progress bar in response to a user touch for more than a predetermined time at a location ('A') of the display unit where the position indicator of the progress bar is displayed, and to change a part of the content which is currently being played on the display unit in response to a user input of dragging the position indicator along the enlarged progress bar; and wherein the progress bar corresponds to an entire length of the content and the enlarged progress bar corresponds to a part of the entire length of the content.