Check out another of my videos: “BREAKDOWN: Select and Mask vs. Refine Edge – Photoshop CC”
Check this out in higher res here: http://www.tutvid.com/tutorials/flash/tutorials/as3Preloader.php
Check out this super easy to customize and edit preloader in flash! It is based on actionscript 3.0, simple to build and code, and even easier to edit! The beauty of this preloader is you can essentially create it one time and copy the vector graphics and coding to any flash project you are working on and WHAMMO! you have a nice preloader ready to go!