A playback device that secures coexistence of a built-in GUI for a built-in machine created uniquely by the manufacturer and a stereoscopic image created by the contents provider. A subtitle decoder displays a subtitle in a predetermined layout by decoding a subtitle stream. A GUI processing unit draws the built-in GUI. The layout of the subtitle to be displayed is one of: normal layout in which areas for subtitle display are provided both in upper and lower parts of a screen; top arrangement layout in which an area for displaying subtitle is provided only in the upper part of the screen; and bottom arrangement layout in which the area for displaying the subtitle is provided only in the lower part. When the top or bottom arrangement layout is selected as the layout of the subtitle, the GUI processing unit selects the layout of the subtitle as the layout of the built-in GUI.