Music number #.gamma. and one or more still images (e.g., IMG_01.IOB and IMG_04.IOB) related to music number #.gamma. are recorded in an audio card. In addition, information (e.g., IPI#5) for setting the still image (e.g., IMG_01.IOB) representing the contents of music number #.gamma. is also recorded in the audio card. In this way, the representative image corresponding to the recorded audio information (music number) can be set.