hey guys i am having problem with syncing music to iphone.. ok i connect my iphone and it takes 1 or 2 mins to sync all stuff from ituens..(everytime i connect my iphone) now i want to delete some song in iphone. i have to delete that song from itunes in order to delete it in iphone.. now what i want is.. i want to delete song from iphone and still want to play that song in ituens and also i want to delete other song in ituens but want to play that song in iphone so what can i do pls help.. i have selected "automatically sync when iphone is connected.." what will happen if i don't select that option?