def play(file_or_url, options = {})
      @players = @devices.map { |device| device.play(file_or_url, options) }
      Players.new(@players)
    end
def play(file_or_url, options = {})
      @players = @devices.map { |device| device.play(file_or_url, options) }
      Players.new(@players)
    end
Public: Plays a video on all the grouped devices

 file_or_url - The file or url to be sent to the devices
 options     - The options to be sent

 Returns a Players instance that syncs the devices