I have a 3g iphone, jailbroke and all is fine with the phone I unstalled a 3rd party explorer GUI on my PC and then uninstalled it. But now when I plug in my iphone and start itunes, my music and video library no longer syncs to my iphone. iTunes sees these libraries, but I cannot delete or add tunes to it. If I uncheck a song, then sync, the songs in my iphone are all still there. Somehow now itunes does not think my library is for this iphone. How do I "marry" my library back to my iphone so I can use it again? The data locations have not changed.