I've contacted the author, but I'll post here too.
It just doesn't work. It displays but no audio plays. I know the path is correct because a regular link plays them fine. So the problem is somewhere in the plugin.
Unfortunately, what I need is a very reliable mp3 player that will display in html5 and flash when needed. My site depends on it. I have yet to find a solution that works consistently, or one that has good support behind the development.
I'm hoping the author has a solution.
Here's where the problem is: