Cannot access iTunes library in iPhoto nor in iMovie

I am using a macpro retina (although I had the same problem with older mac pro) with iphoto 11 and itunes 11. When trying to make a slideshow in the iphoto app my itunes library or playlists do not appear in music pane. I asked this question before and go some instructions which led me to drag iTunes Music Library.xml to desk top make an adjustment but it did not work. I still have iTunes Library.xml page on my desktop. How do I fix problem and what should I do with iTunes Music Library.xml on desktop? I am using iTunes 11.1.3 (8)OS Mountain Lion 10.8.5, and iPhoto 11.9.4.3