Check out this article in Government Technology - (http://www.govtech.com/gt/articles/565977?utm_source=rss&utm_medium=link) just in time for the holidays, too. You can hone your triage skills with a video game!
I'm not sure that this training will ever replace live, functional exercises, but it may help keep skills up between trainings and drills. Still, the best way to learn triage skills is with live, dynamic participants and role-play of victims in scenario based training. I know that is a lot to ask...but it is the best way to learn.