An audio reproducing apparatus (20) reproduces audio data to be reproduced in sync with video data. The audio reproducing apparatus (20) includes a communication device (23) configured to execute communication with another apparatus that reproduces the video data, a unit (29) configured to detect an amount of an error between a reproduction point of the video data in the other apparatus and a reproduction point of the audio data in the audio reproducing apparatus (20) by making use of the communication executed by the communication device (23) with the other apparatus, a unit (30) configured to detect, from a stream of the audio data, an audio data time period of audio data with a sound volume level lower than a specified value, and a unit (31) configured to alter a reproduction speed of the audio data belonging to the detected audio data time period, on the basis of the detected amount of the error in reproduction point.