How to remove duplicate songs from iTunes
Tunesweeper
http://www.wideanglesoftware.com/tunesweeper/
Remove iTunes Duplicates – Safely! Tune Sweeper is the premium duplicate removal tool for iTunes.
Tune Sweeper displays duplicate tracks in groups.
Automatically select which tracks to remove.
Remove all duplicates in one button click!
Optionally backup removed tracks – just in case
meta-Tunes
http://www.macroplant.com/meta-tunes/
meta-Tunes (formerly meta-iPod), the iTunes Cleaner, can clean up an iTunes library with as many features as a Swiss Army Knife. From recovering ratings and play counts from your iPod to tracking down files or folders gone missing, meta-Tunes analyses all data sources containing your music to put the pieces of the puzzle back together.
TuneUp
TuneUp transforms your music collection. Automagically.™
• fixes mislabeled song info (track 01 & unknown artist)
• removes duplicate songs
• fills in missing album cover art
• gets concert alerts, music videos, artist bios & more
Rinse
https://www.rinsemymusic.com/about
We built Rinse to be the easiest and fastest way to organize your songs – add missing album art, fix misspellings, remove duplicates, rename genres and more. Rinse is powered by an intelligent online database which means it can fix songs without making you type in the new information.







