A really hacky script to check for inconsistencies in album art in an iTunes library. Verification uses md5 hashes, so different resolutions of the same artwork will be considered inconsistent.

iTunesArtworkConsistencyChecker.py

import win32com.client
import sys
import hashlib

if __name__ == '__main__' :
  itunes = win32com.client.Dispatch("iTunes.Application")
  tracks = itunes.LibraryPlaylist.tracks
  track_count = tracks.Count

  inconsistent_albums = []
  md5_map = {}

  for track_num in range(1, track_count+1) :
    track = tracks.Item(track_num)
    artwork_collection = track.Artwork
    md5 = hashlib.md5()

    for artwork_num in range(1, artwork_collection.Count+1):
      artwork = artwork_collection.Item(artwork_num)
      try:
        artwork.SaveArtworkToFile('C:/tmp.png')
        f = open('C:/tmp.png', 'rb')
        md5.update(f.read())
        f.close()

      except:
        print 'WOWAH!'

    key_name = '%s by %s' % (track.album, track.artist)

    if not md5_map.has_key(key_name):
      md5_map[key_name] = md5.hexdigest()

    elif key_name not in inconsistent_albums and md5_map[key_name] != md5.hexdigest():
      inconsistent_albums.append(key_name)

    print 'Completed proccessing %d of %d, have found %d inconsistencies' % (track_num, track_count, len(inconsistent_albums))
    

  f = open('C:/incon.txt', 'w')
  f.write('\n'.join(inconsistent_albums))
  f.close()