def self.group(options = {})
    options[:order] = 'created_at DESC'
    options[:conditions] = { :status => @@status[:published] }
    groups = find(:all, options).group_by(&:title)

    groups.each_pair do |title, trailers|
      groups[title] = trailers.sort {|a,b| b.bitrate <=> a.bitrate }
    end
    groups
  end