Copies all files from an iTunes playlist to new folder

extract-itunes-playlist.rb

#!/usr/bin/env ruby -wKU
# PREREQUISITES: sudo gem install rb-appscript

require 'rubygems'
require 'appscript'
require 'fileutils'
require 'pathname'

if ARGV.length != 1
  playlists = Appscript.app('iTunes').playlists.get.map { |p| "\"#{p.name.get}\"" }

  puts "USAGE: extract-itunes-playlist.rb PLAYLIST_NAME"
  puts "Available playlists: #{playlists.join(', ')}"
  exit 0
end

selected_playlist = ARGV[0]

itunes = Appscript.app('iTunes')
itunes.playlists.get.each do |playlist|
  next if playlist.name.get != selected_playlist
  FileUtils::Verbose::mkdir_p(selected_playlist)

  count = 1
  playlist.tracks.get.each do |track|
    orig_filename = track.location.get.to_s
    pathname = Pathname.new(orig_filename)
    dest_filename = sprintf("%04d#{pathname.extname}", count)
    FileUtils::Verbose::cp(orig_filename, "#{selected_playlist}/#{dest_filename}")
    count += 1
  end
end