music_server.rb

#! /usr/bin/env ruby
require 'rubygems'
require 'eventmachine'
require 'rbosa'
module MusicServer
  def post_init
    send_data(currently_playing)
    close_connection
  end

  private

  def currently_playing
    "I am currently playing:\n#{itunes.current_track.name} by #{itunes.current_track.artist}\n"
  end

  def itunes
    itunes ||= OSA.app("iTunes")
  end
end

EventMachine::run do
  host = '0.0.0.0'
  port = 8080
  EventMachine::start_server host, port, MusicServer
  puts "Started Music Server on #{host}:#{port}"
end