iPod 5th Generation doesnt play any song

iPod 5th Generation doesnt play any song

First sorry if my english is bad, i own a ipod classic 80gb, it work pretty good for about a year, but now i cant play any song, it turn on and off normal, but when i go to a song and try to play it, it wont play, the time scroll below at the screen not moving foward, so it doesn`t play.. I can navigate all the menus, but when it comes to putting a song does not play. thx

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