allows you to assign any sound to any of up to 70 events. Hear a sound every time you hit CAPSLOCK or when power to your Macbook is interrupted. Be alerted by a sound when the Finder has finished that long copy. Amuse your friends by having the Mac yawn when it goes to sleep or wakes up. Have HAL ask you if you are sure you made the right decision when you shut your Mac down and many, many more!
Assign a sound to any number of short phrases of up to 3 words and hear it play when the phrase is typed - fun for pranks, but possibly useful to correct your bad typing habits?
Have Sounds4Fun read out the name of the currently playing song and artist when iTunes starts playing a track.