ipod touch doesn't play music or keyboard sounds
I have an ipod touch 2nd Generation and a few weeks ago, when i select a music file to play, the player application returns me to the top of the album selection or artist selection without playing any song, i notice too that even keyboard sounds, app sounds (like games) and alarms do not play any more. So i reset to factory settings many times to see if the error get fixed, but still not working... For a moment whit the lastest version of the itunes my ipod touch worked, so i turn it off for a wile, when i finish my work i turn ON my ipod again and the problem still... I would like to find a correct fix of this problem because i search everywhere whitout a solution..
Thanks in advance Team!
iPod touch, iOS 4.2