If you did not hear a sound when this page opened, you need to do the following:

Click this sound file and play it.

If you get any messages that say you need to download something to hear this file, then by all means download that update.  If you are unable to hear the file for some other reason, then try downloading the latest version of QuickTime and installing it.  A word of warning about QuickTime: It wants to take extensions from existing setup and use itself to open them.  To fix this problem and to aid in hearing this file, download the latest version of Media Player from Microsoft.

Once you have completed all of the above steps, click this and listen for the sound when the page opens.

If you are still unable to hear the sound when the page opens, download the latest version of your browser.
                                    Internet Explorer or Netscape