title: Change page content with background audio
body: <p>A client just asked for a book-reading website with the following settings:</p>
  
  <ul>
  <li>Must have a nav-bar with a menu and a background-music on/off button.</li>
  <li>The menu are links to different content.</li>
  <li>The content must change as users desire.</li>
  </ul>
  
  <p>Here comes the tricky part:</p>
  
  <ul>
  <li>If the background music it's ON, then the audio must play along even if the content changes (the only way I know to change the content is refreshing the URL but this also cuts the audio)</li>
  </ul>
  
  <p>Is there a way to achieve this effect? with JavaScript or Jquery?
  I really appreciate your help. If you post a simple JSFiddle I would be very pleased.</p>