It really depends on what you need cleaned up, and how you want things organized. I prefer to manage my files myself, so I leave the following boxes unchecked in iTunes Preferences:
I also manually add high quality artwork from sources like Album Art Exchange or Google searches.
Again, you don't describe exactly what "clean up" you need. File names? Folder structure? Location of files? Duplicate files or entries in iTunes? Tag information in iTunes?
Again, you don't describe exactly what "clean up" you need. File names? Folder structure? Location of files? Duplicate files or entries in iTunes? Tag information in iTunes?
No software can clean all that up for you, but here's a suggested plan of action.
Decide and create a new folder structure. I have my music stored in folders, first by Genre, then by Artist, then by Album.
Search for and drag all your music into the appropriate folders. You may need to temporarily modify some folder names to avoid having two folders of the same name in the same folder, overwriting one.
Add everything in those folders to iTunes. It will not add files that already exist in your library.
In iTunes Preferences > Advanced, select your new music folder as the iTunes Media folder location.
In iTunes, select File > Display Duplicates and start deleting true duplicates, moving the files to the trash. By "true duplicates", I exclude copies of the same song by the same artist that may be different, such as a studio, live, acoustic, re-recorded version or simply a song that appears on multiple albums that I want to keep. Remember, iTunes uses Song Name and Artist to determine duplicates, regardless of the Album, Album Artist, or other tags.
Use the scripts I posted to clean up capitalization and inconsistent naming conventions in both file names and tags.
It's time consuming, but worth the effort. I've been working on my collection for many years, ripping CDs, adding artwork, lyrics, etc. Depending on the size of your library, it may only take you a few days or weeks.