Hey, i just got an ipod shuffle and have no clue what im doing since i've never used an ipod before. However, whenever i try to "sync" songs into my ipod it will start syncing. At the end a smaller window will pop up saying, "The iPod cannot be synced. The required disc cannot be found." DOES ANYBODY KNOW WHAT I DID WRONG AND/OR WHAT I HAVE TO DO TO MAKE IT WORK PROPERLY?