ipod nano (2nd generation) won't play any sound

as the title says, my ipod nano (2nd generation) wont play any sound. the songs still play just fine, but no sound or very little sound is coming out. i've tried different headphones, none of them working. and then i attempted using my speakers which worked at the highest volume of both the ipod and the speakers, but very little sound came out and it sounded fuzzy.

after this, i reset my ipod, then restored it, and still no sound. so i reset the ipod again, making sure that everything under the setting was correct for the sound. i even tried putting the clicker on "headphones" and that didnt work either. it connects to the computer fine and has a fully charged battery.

help please?

Windows Vista