I realized this morning I have a lot of postings about things that don't work. These are all references to the next version (.2). The version you can download now (.1) is still good to go. It will still remove duplicates from the iTunes folder and clean iTunes of orphaned files. You can download version .1 on the right side of the blog.
This blog is used to fulfill a requirement for my Software Engineering masters project and so this is acting as a diary of the design/build process.
On another note, I woke up this morning with a solution to the previous posting about duplicates being created by the Add Tracks process if iTunes is set to copy songs to the folder. As of now, the solution depends on asking the user if the Copy option is selected in iTunes and if it is, then iTunesDSM will make a temporary copy of the track to an outside directory and then import that file into iTunes simultaneously deleting the file that was already in the iTunes folder. Basically, copy file, delete file, import file, iTunes copies file. If iTunes does not copy files to the music folder, then the file will remain in place.
I will try and code this solution this afternoon.