change your actionscript source settings from:

D:\Flash\AdvancedGameDesign\com\

to

D:\Flash\AdvancedGameDesign\

As you probably read in the first book, class packages are a way of protecting your class from getting overwritten by another of the same name.
Say you created a game package that had a class called Player at com/websiteA/Player.as. Now say you add someone's else's music playing package. Your unique folder path would protect it from say a Player class in their package at com/websiteB/Player.as

When it comes to setting up targets to source code, you basically just point it to the parent folder just before the beginning of the package path

So in your case you just point it to where the com folder is and since com is in the package name, it will take it from there.