I've noticed that in Zimbra Desktop 0.9 that there's an option to "play a sound" when a message arrives. However, I don't get a sound except for Windows' little system tray notification sound (that faint little popping sound). Of course, that's too quiet to hear. Next to the "play a sound" option, it says "(requires QuickTime or Windows Media plugin)". How do I install the QuickTime or Windows Media plugin to Zimbra Desktop? If I were in Firefox I'd know how to go about that, but not with Desktop.