7. iTunes will create an iTunes 1 folder in your Music folder and open a brand new iTunes library (don't worry your old playlists and songs are fine)

8. Go into the iTunes Preferences and click on the Advanced tab.

9. Uncheck the option "Copy files to iTunes Music folder when adding to library" and then close the iTunes Preferences (this will prevent iTunes from duplicating all of your audio files).

10. At the top of iTunes screen click File, go to where is says Library, and then choose Import Playlists