title: how to control in client application
body: <p>I have created 2 applications; a Server and Client.<br>
  I need to be able to control the client from server </p>
  
  <p>Example:</p>
  
  <blockquote>
    <p>If we have music player broadcast
    video i want when i play video be able
    to stop ,play, mute the client from
    server</p>
  </blockquote>
  
  <p>Please tell me how to start using sockets.</p>