A computer-readable recording medium that records a program for having a computer perform check-out operations and check-in operations, the computer storing a permitted number and a piece of check-out history information, each check-out operation being performed by writing an audio track into a recording medium and decrementing the permitted number, each check-in operation being performed by setting the audio track in the recording medium in a non-playable state and incrementing the permitted number, the piece of check-out history information including a media ID unique to a recording medium, in which a first audio track has been recorded, and a content ID included in the first audio track,
- the program comprising:
- a connecting step for connecting a target recording medium, in which a media ID and a second audio track have been recorded, the second audio track being an audio track to be checked in;
- a judging step for, when the target recording medium is connected, judging whether the piece of check-out history information matches the media ID in the target recording medium and a content ID in the second audio track;
- and
- a check-in step for, when a judgement result of the judging unit is positive, performing a check-in operation on the second audio track.