I have iTunes on my PC. It's what I synced my iPhone with. All of My music is on an external HD. I do not want to duplicate files and put them on my Mac's HD. I got a new Macbook Pro, and imported my songs successfully, but now I don't have the same playlists as on my PC. When I go to sync my phone it tells me that it's going to delete all music on my phone and replace it with the new library/playlists. How do I set it up so that I can sync my phone the same way I had it synced on my PC? (Photos and ringtones are doing the same thing. It wants to delete everything on my phone and start over.) Please help? Thanks P.S. I searched and searched, but turned up nothing specific.