Problems with Alerts and Sounds: Windows Live Messenger

Since I have installed Windows Live Messenger, I have been having trouble
with Alerts and Sounds. Most of the time when I get News Alerts all I hear
is a click. While IMing and someone sends me a nudge, I hear nothing. When I
go to Tools\Options\Alerts and Sounds, and try to play the Windows Live
Messenger Events, sometimes it plays, sometimes it doesn't, or I hear a
click. Can anything be done about this?

Ken
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