After awhile, Mac OS X’s alert sounds can be downright grating, as can many of the sounds you hear in Mail, iCal, and iChat. Happily, creating a custom alert sound and adding it to your system isn’t ...

A nice new feature in OS X 10.5’s iCal is the ability to create events that have an alarm attached by default—previously, you had to manually do this for every event you added to your calendar. (10.4 ...