When I open my Itunes library and want to play a song, I click on the song and a box appears stating that the song could not be used because the original file could not be found. Would you like to locate it? Then an ! point is posted to the left of the check. Can anybody help me put my IPOD and Itunes back in order where I can hit a song in Itunes and it will play? My concern is loosing all my playlists. Thanks so much!