Patent ID: 7599958

Claim:
A method for retrieving information located within an audio data file, comprising: detecting whether a prescribed marker is written at a first location in a reserved area of a management entry for the audio data file; and reading address information from a second location of the reserved area of the management entry when the prescribed marker is detected in the first location, the address information indicative of a location of descriptive information relating to the audio data file, wherein the management entry is provided separately on a storage medium from the audio data file, wherein the address information is indicative of a location of a predetermined one of a final plurality of data clusters in which the descriptive information is stored or which is adjacent to one or more final clusters in which the descriptive information is stored, and wherein the descriptive information at the location of the predetermined one of the final plurality of data clusters is read without reading intervening data clusters containing music of the audio data file, the descriptive information providing an indication of at least one of a title or an artist associated to a song stored in the MP3 digital audio file.