Prequel features:
loading of the container SWF
loading of external files of any type, including those not handled by flash directly (like PDF's for example)
Aggregate percentage information for all files being loaded
option to buffer media files to a specified to percentage
Lightweight(under 4k)
XML and URLVariables can be preloaded directly into objects ready for parsing when the COMPLETE event is fired.
A custom 'PROGRESS' event returns data on the file being loaded, percentages, data values, and more.