Is it duplicating entries in your iTunes library, or duplicating files on your hard drive? If the latter, uncheck the following boxes:
If it's the former, in iTunes click File > Display Duplicates and make sure they're true duplicates. iTunes matches Artist and song name to determine duplicates, but they may come from different albums, one may be a live, acoustic or extended version, they may have different bit rates or duration. In some cases, it's preferable to have duplicates, such as wanting to keep albums intact. No app can make those determinations. It's safer to manually determine what is a true duplicate that you want to get rid of.
You won't find an app to do this, so stop looking. Instead, look at the file path of each duplicate to find out where they're located. My guess is you have 3 folders on your system where the same music is duplicated. One quick method would be to delete everything from your iTunes library, keeping the files, then add to your library only the folder that contains the music you want. Be sure to uncheck the boxes I showed you earlier before you add to the library.so is one of these three songs the actuall original, and two are the duplicate? and if i accidently delete the original will the duplicates play?
this is why i want a program, as there are so many i do not have the lifetime it would take in order to delete all the duplicates manually