What is the worse thing it could happen to the files you have on your iPod/iPhone? That the files are damaged? That you eliminate them by mistake? That fro some other reason you cannot reproduce them anymore? In fact, none of this will be a problem.
CopyTrans Doctor is an application that will allow you to analyze, diagnose and recover lost or eliminated files from your iPod/iPhone.
This version has lots of corrections, changes and new features that improve its operation, remarkably.