Ok, I am trying to move my iTunes library from my PC to MacBook. I copied the My Music folder on the PC to a flash drive... inserted the drive into the Mac. I copies all files inside the iTunes folder into the Mac iTunes folder. I see all my music and podcasts but most of the files have an ! in the first column... When I click on the ! it says "original file could not be found...would you like to locate it." When I click YES... it does nothing. Do I need to re-subscribe to all my podcasts??