Patent ID: 8119899

Claim:
An audio player comprising: means for receiving an input of profile information relating to physical characteristics of a user of the audio player; means for calculating at least one additional physical characteristic of the user based on the input profile information prior to the user beginning exercising; means for displaying the profile information input by the user and the at least one additional calculated physical characteristic of the user prior to the user beginning exercising; playing means for playing music data; sensor means for detecting changes in actions of the user caused by the user exercising; detecting means for detecting an action tempo of the user at a plurality of predetermined times following starting of playing of music data through said playing means, based on a detection output from said sensor means; determining means for determining whether a first difference, the first difference being between a tempo of music data being played by said playing means and the action tempo of the user detected by said detecting means, is within a predetermined range; searching means for identifying, when said determining means determines that the first difference between the tempo of music data being played and the action tempo of the user is outside of the predetermined range, music data having a tempo of which a second difference as to the action tempo detected by said detecting means is within the predetermined range; and changing means for changing the music data played by said playing means to the music data identified by said searching means.