in audacity, I put together a few things to make a siren with a rumbler built in. Now, I export it as a Microsoft Signed 16-bit PCM mono .wav file, and when I try to replace a file in the ivaud editor, it says it's not a valid PCM file... Can someone tell me what I'm doing wrong?

Just in-case, but you already know, this is for all users that need help:

When Exporting sound files for IV, when you export, there is a small box that has different labels and things, such as "title" or "tags". DO NOT FILL IN ANY OF THOSE BOXES! When importing the sound files into an .ivaud with the Ivuad Editorm, it will not recognize it, only as one of the names you put in the boxes, not allowing it!

And that's why it wouldn't work. Hope that helps anyone in need!