Need to really concentrate on that billiards shot? You can mute all Yahoo! Games sounds in Yahoo! Messenger:

1. Select Messenger.
2. Select Preferences.
3. Click Alerts & Sounds.
4. Check the Mute Yahoo! Games sounds in Messenger by default option.
5. Click OK at the bottom of the window.

Please Note: If you want the sounds back on, uncheck the Mute option.