Remove duplicate files in iTunes as a result of Consolidate Files

deconsolidate.rb

require 'find'
root = '/Volumes/music' # pick your path
Find.find(root) do |path|
  if FileTest.directory? path and File.basename(path)[0] == '.'
      Find.prune
  else
    d, f = File.split path
    if f =~ /^(\d+(\-\d+)?.+)(\s\d+)\.(mp3)$/i
      orig_file = File.join(d, $1 + '.' + $4) # check for existence of original file name including extension case
      if File.readable? orig_file
        puts "O: #{$1 + '.mp3'}, deleting #{f}..."
        begin
          File.unlink(path)
        rescue
          puts "Error deleting #{f} in #{d}, try later outside here"
        end
      end
    end
  end
end

dir-flatten.rb

require 'find'
require 'fileutils'
root = '/Volumes/music' # pick your path
Find.find(root) do |path|
  if FileTest.directory? path
    if File.basename(path)[0] == '.'
      Find.prune
    else
      next
    end
  else
    # look for folder.jpg / cover.jpg
    if path =~ /(.jpg)$/i
      dir, filename = File.split path
      basedir, albumdir = File.split dir
      if albumdir =~ /^(?:\d+\s\-\s)(.+)/
        itunes_dname = File.join(basedir, $1)
        puts "Checking for directory #{itunes_dname}: "
        if File.directory? itunes_dname and File.readable? itunes_dname
          puts "\e[32mOK\e[0m"
          tgt = File.join(itunes_dname, filename)
          if path == tgt
            puts "Already in ok path. Skipping"
          else
            puts "Moving: #{path} to #{tgt}"
            FileUtils.mv(path, File.join(itunes_dname, filename))
          end
        else
          puts "\e[31mNOK\e[0m"
        end
      end
    end
  end
end

Danger I hit during run of this script is using it on an AFP volume with different UTF-8 variants (why the rescue condition was hit surprisingly frequently, especially with my Germanic, Scandinavian origin songs - seems there was a mix of ISO-8559-1 with UTF-8 for just umlauts? Ugh). You'll want to make sure that your UTF-8 encodings reconcile with the OS as well as how OS X defaults (Google for rsync iconv utf-8-mac to get started on the rabbit hole). I wound up modifying the FreeNAS afpd configuration to use the OS X encoding always since there's no clients other than Macs that will use AFP and FreeBSD and Linux are both more flexible than OS X on this matter.

And if it's not obvious, this will totally break any file references that iTunes or other programs would have to the deleted files.