Half of the playlists as well as random songs won't transfer over to the iphone and ipad. longtime itunes account, only one user id ever, 7000+ songs; new imac, ipad 3 and iphone 4s. plenty of space, and all running latest iOS. I have tried updating Match, turning it off and on at all 3 devices; I see other people have had similar problems, but not the exact one I'm having; any ideas what the problem is, and how do i fix it so i can get my playlists from the iMac to my iphone? i prefer to create and edit playlists on the big screen of the iMac;