Default Help music player not reading mp3 files after updating to 4.3

can someone help me when i updated my i9305 to 4.1.2 to 4.3 my music player cant read mp3 or my musics on sd card or external card even if i fully wipe the internal and factory reset and transfer song to my i9305 from my computer via usb cable the phone cant read the files but if i go to file explorer i can see the mp3 file that ive put and can play it there but not in music player its not listing the mp3 in the music player tab not like 4.1,, please help me thanks in advance