i have the same mp3 player and i found a wall adapter so i can plug it in to the wall but when i plug it in the wall the blue light on it is blinking and it plays music and stays like that and im not sure if its charging because when i plug it into the computer the light is solid for about 20 minutes to half an hour and music wouldnt be playing when i plug the head phones in sooooooo can i have any help please