just picked up a new iMac last night after Apple spent the weekend doing the data transfer of my pictures and music. When I got into iTunes and tried to play music, I get a prompt that says that the file is not found and that I have to locate it? I ensured that the computer was authorized but this does not solve the problem. Any suggestions on insights here as to what is required?? I really had hoped that the work Apple did would make this a seamless transition but it appears not. Thanks in advance for your comments.