I have a samsung propel A767 and i wanted to put music on my phone, i know that i need some type of USB cable. Where can i get this USB cable? Can i get it at the AT&T store? I was looking online on the AT&T website and i found this (Car Charger with USB Port - for the Samsung propel A767 phone. Is this the USB cable i need? Does this allow you to put music, videos, pics on your phone?