I recently moved my music library to an external library by changing the pathway in Edit/Preferences/Advanced and then consolidating the library. Everything worked for a while but now when I open itunes it is not able to find all the files. Bizarrely for a lot of albums it can find one or two of the songs but the rest all get the "Unable to locate original music file" error message. The music is all there on the hard drive but I don't want to have to manually locate each one. Does anyone know what is causing this or have a script to locate the rest of the music automatically?