How to open the Preferences for any application

Change the alerts and sounds that play

An overview of the iChat preferences

A look at the Mail Preferences

An introduction to Safari 3 in Leopard.

Change the default alert sound your computer plays

Disable computer sound effects (ex: when you empty the trash or change the volume) and Front Row effects

An introduction to the Sound pane, change the sound effects your computer uses, as well as your input and output devices