My problem is (maybe) a little complicated. I want to move my iTunes library to an external hard drive. Unfortunately I tried to move it without following the proper instructions from Mac.

I moved the music files (iTunes Music folder) to the external hard drive and deleted the folder (and music files) from my computer after the move. Then I went to iTunes preferences to change the location of iTunes Media (to the external). Then I checked it and iTunes couldn't play (couldn't find) any of the files (of course). I moved everything back, changed the preferences, still couldn't find the songs so I re-created my library and playlists following the instructions from Apple support. Now most of my music is back in iTunes but not all. Some of it it said it couldn't find. I'm not sure of all of the music it can't find (I know some of it from memory). All of the files are in the iTunes Music folder (I assume) and I so want to added the files it couldn't find but not duplicate everything I have in my library already. Then move my files to the external properly. How do I do this?
Bonus question.
None of my I iphone applications are in my iTunes. I'm afraid to connect my phone now as I fear I will lose the applications and the info in those apps. How should I handle this?
Sorry for the long explanation.

Thanks for your patience.
