I was having this trouble of too many duplicates in iTunes. So I decided to erase the existing iTunes library files and re-import them into iTunes. Strangely, it is seemingly creating duplicates out of nowhere. I only rip entire albums. So let's say in my music directory of MP3's I have ONE COPY of Abbey Road. After the import of my music directory (ALL MY albums are in ONE directory), Abbey Road shows up TWICE in iTunes. WTF?