Music synchronization arrangement

A media player for modifying a song based on an exercise regime, the media player comprising:

• a file system operable to store a plurality of songs having tempo tags associated with each of the songs, wherein each tempo tag represents an exact tempo value of a song from the plurality of songs, and an exercise regime;
• and
• a processor coupled to the file system and operable to:
• download multiple versions of the same song from a server computer to a portable media device, wherein the multiple versions represent the same song in different tempos;
• determine a desired tempo of a portion of an exercise regime;
• compare the desired tempo to at least one of the stored tempo tags;
• and
• select, at the portable media device, a song from the plurality of songs having a tempo that best matches both the desired tempo and a current pace of exercise, so that, when dynamically adjusted, the selected song has sufficient length to play for the entire duration of the portion of the exercise routine;
• and
• dynamically adjust the tempo of the selected song to best match both the desired tempo and the current pace of exercise.

A method for modifying a media item based on an exercise routine, the method comprising:

• downloading multiple versions of the same media item from a server computer to a portable media device, wherein the multiple versions represent the same media item in different tempos;
• determining a desired tempo of a portion of an exercise regime;
• comparing the desired tempo to at least one of the stored tempo tags;
• and
• selecting, at the portable media device, a media item from the plurality of media items having a tempo that best matches both the desired tempo and a current pace of exercise, so that, when dynamically adjusted, the selected media item has sufficient length to play for the entire duration of the portion of the exercise routine;
• and
• dynamically adjusting the tempo of the selected media item to best match both the desired tempo and the current pace of exercise.

A computer readable medium for storing in non-transitory tangible form computer instructions executable by a processor for playing a media item on a portable media device, the computer readable medium comprising:

• computer code for determining a current pace of movement of a user of the portable media device;
• computer code for determining a desired pace of movement for the user;
• selecting the version of the media item that, among all versions of the media item on the portable media device, has the tempo that best matches both the desired pace of movement and the user's current pace of movement;
• and
• computer code for dynamically adjusting the tempo of the selected version of the media item to best fit both the desired pace of movement and the current pace of movement.

An apparatus for playing a media item on a portable media device, the method comprising:

• means for downloading multiple versions of the media item from a server computer, wherein the multiple versions represent the media item in different tempos;
• means for determining a current rhythm of movement of a user of the portable media device;
• means for determining a desired rhythm of movement for the user;
• means for selecting a media item associated with a tempo tag that has a tempo that best matches both the desired rhythm of movement and the user's current rhythm of movement;
• and
• means for dynamically adjusting the tempo of the media item to best fit both the desired rhythm of movement and the current rhythm of movement.