Jim Shimozawa wrote the following: > Hello iBook people: > > I never had any problem using iTunes until yesterday. > Now, starting this app gives me the following message: > "The iTunes Music Library file cannot be read because it does > not appear to be a valid library file". Are the iTunes library files (individual album folders and mp3 files in finder window) still there? can you play a single track by double clicking it in a finder window? Have you tried simply trashing the prefs file for iTunes and restarting? Not sure but if that doesn't work then I would suspect Filevault and the new automatic defragmentation feature in 10.3... HTH, Richard --