I'm not at all sure what to do. All of a sudden, when I try opening roughly 80% of my Itunes library, I get the message "The song ______ can not be used because the original file can not be found. Would you like to locate it?" . I haven't changed anything with regards to where my music files are stored on my drive, and I'm not sure what prompted this to happen, or how to fix it. Can anyone help?