If you want a very robust multiLoader in as3 then BulkLoader by Arthur Debert is a great solution. This as3 multi-loader manages the loading of multiple images and swfs and is a lighter class, and is based on the BulkLoader code.
Tracking of individual progress and of the group is easy. To view the loading again, just refresh the page. There is a sample .fla, with sample code for loading and tracking images, which can be downloaded here. Please let me know of any questions or suggestions.