Philipp and me have been using the PreLoader class as a Loader replacement for some years now. It loads asset SWFs more convenient and has some nice improvements over the usual Loader.

Key features:

• Works similar to the Loader class (although it’s not extending it)
• Allows only one loading process per time (integrated loading queue)
• Some nice enhancements

Download here
Find documentation
See a typical scenario
Differences to Loader