Information playback apparatus

An information playback apparatus, comprising:

• a playback device for playing back information recorded in an information recording medium;
• a beat density measuring device for measuring a beat density of the information being played back by said playback device;
• a storage device for, in response to an instruction for cue point registration, storing a cue point indicating a start position of random access playback and the beat density of the information in playback which has been measured by said beat density measuring device;
• a cue point specifying device for instructing said playback device to specify a start of the random access playback from the cue point stored in said storage device;
• and
• a beat density correcting device for controlling said playback device to correct the beat density of the information to be played back from the cue point in the random access playback, wherein
• when said cue point specifying device specifies the start of the random access playback, said beat density correcting device finds a difference between the beat density of the information measured by said beat density measuring device when the start of the random access playback is specified and the beat density stored in said storage device, and controls said playback device to start the random access playback by changing the beat density of the information, which is measured by said beat density measuring device when the start of the random access playback is specified, to the beat density of the information to be played back by the random access playback, in response to a quantity of change in said difference over a predetermined time.