Dupin is the iTunes duplicates manager.
New in version 2.4:
- Can detect if iTunes Match is enabled
- Addresses issue of having to individually acknowledge deletion of each track when iTunes Match is enabled
- Can identify iTunes Match "cloud tracks"
- Adds column header contextual menu to show/hide columns
- Fixes text coloring issue when window not frontmost
- Updates names of columns for parity with modern iTunes
- Other minor enhancements
Dupin v2.4 is a free update for registered users of v2.x.