Renames music files accoriding to their netadata

music_renamer.rb

#!/usr/bin/env ruby
require 'mp3info'

dir = ARGV[0]

Dir["#{dir}/*.mp3"].each do |filename|
  new_file_name = ' - '
  begin
    Mp3Info.open(filename) do |mp3|
      file_name = "#{mp3.tag.title} - #{mp3.tag.artist} (#{File.basename(filename)}).mp3"
      file_name.gsub!('/', '-') if file_name.include?('/')
      new_file_name = "#{dir}/#{file_name}"
    end
  rescue 
    nil
  end
  File.rename(filename, new_file_name)
end