i bought a new ipod nano 6th generation. plugged into my older ipod nano wall charger and nothing. i plugged my 5 year old ipod nano into it and it works but not for the 6th generation model. it will charge from my computer but dont really want to have to turn my computer on every time i want to charge it, thats why i had a wall charger for my older one. i called apple and they said i needed a charger for a 6th generation model. dont really want to spend another $30.00. ideas ?