INFORMATION PROCESSOR, INFORMATION PROCESSING METHOD, AUDIO OUTPUT SYSTEM, AND COMPUTER-READABLE RECORDING MEDIUM

An information processor includes an acquisition unit, a course setting unit, a registration unit, a detection unit, a first determination unit, and a controller. The acquisition unit acquires information regarding a via-point. The course setting unit sets a course from a starting point to a destination point through the via-point. The registration unit performs registration processing. The registration processing includes associating sound data with the via-point. The first determination unit determines whether or not a current position detected by the detection unit is within a predetermined range from the via-point. The controller makes an output control of the sound data associated by the registration processing, on the basis of a determination result by the first determination unit.