To listen to a sound from one of the collections below, click on the 'MP3' button.  This will open a new window where you can choose to save the file or open it.  Choose 'Save' and then specify a location on your hard drive to save it to.  If you do not get the 'File Download' window, right-click on the 'MP3' button and left-click on 'Save Target As.'  This will allow you to save the sound file onto your hard drive where you can play it.