Iphone file structure

i have program allows me backup/view iphone file structure. there book or tutorial describes file structure is. example how songs stored.. there bunch of folders similar f01, f02, f03, etc how songs stored in there doesnt seem make sense me..

learn complete file structure of iphone or atleast have reference sheet describing folder are..

 

surely there tutorial out there discusses how , file folders on iphone4

 

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