An electronic data outputting section switches output electronic data from one electronic data to another electronic data. Upon the switching, a sameness judging section judges whether or not audio data associated with the electronic data that is currently being outputted and audio data associated with the new electronic data that is to be outputted are identical to each other. When the sameness judging section judges that they are identical to each other, the audio data outputting section keeps on outputting the audio data that is currently being outputted. This prevents such unnatural audio playback that a sound supposed to be continuously played back is temporarily stopped and then is played back again upon the switching of the content playback.