simple script to parse the iTunes XML file

parse_itunes.rb

require 'rubygems'
require 'xml'

class Inode
  
  attr_reader :at
  
  def initialize(node)
    @at = {}
    key = nil
    node.each_element do |p1|
      if p1.name == 'key' 
        key = p1.content 
      else
        @at[key] = p1.content
      end
    end
  end 
  
  def has_rating?
    at['Rating'] || at['Grouping'] =~ /Star/
  end
end

doc = XML::Parser.file('lib.xml').parse

a = []
doc.find('/plist/dict/dict/dict').each do |p|
  n = Inode.new(p)
  a << n if n.has_rating?
end

a.sort! { |n,m| n.at['Rating'].to_i <=> m.at['Rating'].to_i }

a.each do |v|
  puts v.at['Rating'].to_s + " - " + v.at['Name']
end