i was listening to music at my job today thur the speakers, and my ipod died, so i figured it was no biggy just go home and charge, but when i got home tonite and out it in to my dock a battery sign with a lightning bolt comes up and it just stays there, then out of now where my ipod started to beep! my ipod wont connnect to my iMac at all , let alone will it charge! has anyone had this problem before?! some one please help!!