Frustrated trying to manage duplicate tracks and files in iTunes on your Mac?
Of course you are!
iTunes' "Show Duplicates" feature is helpful but you still have to examine every track to determine whether you want to keep or delete the tracks it finds. Smart Playlists are of dubious help and trying to locate all duplicates with them can be tedious as they can quickly crowd your Source list and slow iTunes down.
Now there's Dupin.
Dupin is your iTunes duplicates manager.
With Dupin you can:
- Quickly find all sets of duplicate iTunes tracks based on your choice of criteria
- Select the "Keeper" tracks from among a number of duplicates automatically using a variety of versatile filtering options
- NEW! - consolidate the play, skip, and ratings information from all tracks in a Dupe Group to the single "Keeper" track
- NEW! - re-populate iTunes playlists replacing "non-Keeper" tracks with "Keeper" tracks
- Purge duplicate tracks from iTunes and send files to the Trash
- Manage intentionally duplicated tracks
- Copy tracks to new iTunes playlists
- View duplicates in non-loaded libraries created with iTunes' multiple library feature or iTunes Library Manager
- View duplicates in iTunes libraries on other machines on your local network
- Sort tracks and view track info
- Export a list of duplicates to a text file
- Locate tracks in the Finder and in iTunes
- Audition tracks
In addition, Dupin features:
- Familiar iTunes-like interface
- Robust Help
- Ample keyboard shortcuts
- Visual progress feedback during operations
- Customizable toolbars
- Optional update checking

Dupin is easy to configure and use. Download the full-featured demo and try it out for yourself now.
See Dupin in action in these video tutorials:
System Requirements
- Installation on a Macintosh computer running OS X 10.4 or better
- iTunes 7 or better
- Dupin does not run on Windows
New in version 2.0.2 (current):
- Fixed retro-syntax issues for Tiger systems
- mar 18, '09
This version is a free upgrade for registered users of v2.x.
New in version 2.0.1:
- Fixed errant button positioning in "Re-Playlist" window
- mar 16, '09
New in version 2.0:
- New "Consolidate History" tool can consolidate the play, skip, and ratings information from all tracks in a Dupe Group to the single "Keeper" track
- New "Re-Playlist" tool can re-populate iTunes playlists replacing "non-Keeper" tracks with "Keeper" tracks
- Added "Track Number" and "Disc Number" to "Get Duplicates" Criteria
- "Library Matrix" replaced with Playlist Popup
- Many GUI enhancements
- Main window now smaller minimum size
- Safely interupt and/or cancel most routines
- "Filter Controls" replaces "Volume Location" with "Folder Location", "Protected" kind with "Purchased" kind
- Main Menu re-organized
- Many speed and efficiency enhancements
- Fixed error when trying to parse track while being downloaded, sync'd, or is otherwise "location-less"
- "Get Info" displays Sample Rate appropriately when information is not available (usually for videos)
- Addresses issue with malformed file paths
- New "Library Profile" tool can list information about current iTunes library for diagnostic purposes
- Video tutorials via website
- mar 14, '09
Screenshots (click on an image to see it full-size in a new window)
Purchase and Register Dupin
Download Dupin version 2.0.2 now.
This update is free for registered users of v2.x.
The unregistered demo version of Dupin will display up to 20 sets of duplicate tracks per session. All other features are unencumbered.
The full version of Dupin costs $15.00.
Registered users of Dupin v1.x can upgrade for $7.00*.
After your payment is received you will be emailed a registration code which will enable Dupin to display all the duplicates it finds. You'll also enable me to continue working on Dupin and make it work better for you!
You can make safe and secure payments using your credit card through PayPal below (Kagi ordering coming soon).
Dupin v2.x Full Registration - $15.00
Dupin v2.x Upgrade Registration - $7.00*
Upgrade from Dupin version 1.x.
You must have a valid Dupin version 1.x registration code in hand to purchase and use an upgrade registration code.
*If you purchased a version 1.x registration code after January 31, 2009 you can upgrade to version 2.x for free. Please contact me to verify eligibility.
PayPal eCheck: Payments made by PayPal eCheck will take up to 5 business days to clear. (Your payment will be by eCheck if you do not have a credit card attached to your PayPal account or your PayPal account is "unverified".) As soon as your eCheck clears with PayPal your registration code will be emailed to you.
Currently, I can only accept payments electronically via PayPal and Kagi. For other payment options, please email me at dougscripts at mac dot com.
Web mail users: There is a possibility that emails from me will be re-routed to your spam or junk mailbox. As soon as you receive the PayPal confirmation, check these mailboxes for the email containing your registration code. Otherwise, if you don't receive your code, let me know; it may take me a day or two to manually send you a code.
If you have any problems, ideas or suggestions, please email me.
My name is Doug Adams,
dougscripts at mac dot com.
This application uses reasonable precautions to protect your data, but that is no guarantee against unforseen situations on your computer. I make no guarantees to this application's effectiveness on your computer and cannot take any responsibility if something goes wrong while using this application. If this makes you aprehensive then please be certain to backup your iTunes audio and video files before using.
















