If you're rockin’ out to polka on your headset, you can tell Yahoo! Messenger to also ring your PC 'squeaker'—the tiny built-in speaker inside most computers.

Here’s how to enable this feature:

1. Under Messenger in the upper left corner, click Preferences.
2. In the category list down the left side, click "Calling & Audio".
3. Near the middle of this window, check the box next to "Ring PC speaker".