Did you check the file's info? Maybe it's written like that.
And when it made MSN crash, did you check if the file had any info at all?
I found this plugin crashing with a specific group of files: Blink 182 which didn't have tag info in them. *after looking at previous posts* Oh, someone had the same problem.
Ah, and don't double-post, it's against the forum rules (edit your previous message)