gistfile1.rb

  has_attached_file :media, {
    :url => "/tracks/:id/:style.:format",
    # Should I get rid of media access token
    :path => ":rails_root/tracks/:id/:style.:format",
    :processors => [:ffmpeg],
    :styles => {
      :mp3 => { :format => 'mp3' },
      :ogg => { :format => 'ogg' }
    }
  }