Patent 7903510 was granted and assigned to LG on March, 2011 by the United States Patent and Trademark Office.
A method of reproducing an audio file includes: identifying a type of audio data in the audio file based on an extension information of the audio file separated from but associated with the audio data of the audio file; and determining whether the audio file is reproducible by checking whether a part of the audio file constructs a specific format stream corresponding to the identified audio type.