I tried messing with the "taunts" once.
I saw they were in mp3 format, and put my own file in there.
When the game ran, the taunt didn't work. All I got was silence.
I'll try WT if I can get a hold of him (not as easy as one might think).
I'd try Nannerslug if anyone knows how to get a hold of the guy.
Same with Chris Jones, who's an incredibly helpful guy.
I'll get there sooner or later.
Cheers,
Azrael