You can attach sounds to events. The format must a .WAV file. Either a URL, or path to a local file. If a local file the backslash's in the path must be escaped. (eg. playsound: 'C:\\Windows\\sound_file.wav'). Some sound files can be found here. Another great example of sounds can be seen in the 'Browse Root of C:' example in 'Files & Browsing'.

Sound Example

<html>
   <script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
   <script language="JavaScript" type="text/javascript"> var $jQuery = jQuery.noConflict(); </script>

   <script type="text/javascript">
     jQuery(document).ready(function()
     {
         jQuery("#notepad_link").on("click", function (event) 
         {      
           event.preventDefault(); // Recommended to stop the link from doing anything else
           document.dispatchEvent(new CustomEvent('funcIntraLaunch',
           {
              'detail': { task: 'run',
                          program: 'notepad.exe',
                          workingfolder: 'C:\\Temp',
                          switches: '',
                          playsound: 'http://www.particlesoftware.com/temp/Trek_Sounds/trek_working.wav',
                          windowstate: 'max',
                          showerrors: 'true'
                        } })); 
         });
     });
   </script>

<body>
   <a href="#" id="notepad_link">Open notepad</a>
</body>
</html>