A playback system includes a display device and an information terminal adapted to communicate with the display device. The information terminal includes a processor and a recording medium storing instructions which when executed by the processor cause the processor to perform a process including displaying a first group of identification information items of content data stored in the information terminal in a first viewing area of a display screen, and displaying a second group of identification information items of the content data selected according to a selecting operation performed on the first group of identification information items displayed in the first viewing area in a second viewing area of the display screen at different times. The display device is adapted to play back the content data corresponding to the selected identification information items.