Is anyone out there adept at troubleshooting mp3s?

I have an mp3 of Alexx reading a chapter of _Understanding Comics_ by Scott McCloud and, while all the previous mp3 recordings are okay, this one is not playing on Windows Media Player, but is playing fine on my BookSense, the device I used to make the recording. The error message I get just says that the media player can't olay the file.

Would anyone be willing to take a look at it and try to figure outw hat's keeping it from playing on WMP?

Also, if there are any faqs for troubleshooting BookSense recordings, I would be interested in finding them.