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Creating and Using Your Own Alert Sounds > Preparing Alert Sounds - Pg. 244

Customizing Your Mac OS X Desktop with Digital Media 244 Whatever source you choose, you need to capture the specific sound you want to use in a file of one type or another. How you do this depends on the specific source file that you select. If you have read through many chapters of this book, you should have a good idea how to do this in the digital lifestyle applications. However, as a refresher, in the following sections, you'll see a summary of the steps you use for various types of sources. Creating an Alert Sound in iMovie You can create an iMovie project just to create an alert sound. The benefit of this method is that you can use iMovie's audio tools to create a complex alert sound. For example, you can fade sounds in, fade them out, and even layer sounds. (See Chapter 4 to learn how to create and work with sounds in iMovie.) After you have created the alert sound "movie," you can export it as a QuickTime movie. Then you can use QuickTime Player to remove the video track and to convert the sound into the appropriate format. (See Chapter 9 to learn how to export QuickTime files in various formats.) Capturing an Alert Sound from a QuickTime Movie Capturing an alert sound from a QuickTime movie is simple. Just open the movie, crop the section of the movie that you want to use, and export that movie in the format you want to use the sound that you have selected as an alert sound. (To use QuickTime Player's tools to edit a QuickTime movie, see Chapter 1.) TIP A great source of QuickTime movies from which you might want to extract sounds for alert sounds are the QuickTime movie trailers that are available on