ok I try to open Itune to install some new music into my ipod, but when i click on it , i keep receive the message that said " The iTune Library.itl file is locked, on a locked disk, or you do not have a write permission for this file" . I try to uninstall the old one , and then download a new one, but the message keep pop up every time i try to open itune program! do you know how to fix this please help!