*.pwav into REmatrix Solo convolution reverb. Is it possible?

Hi, I've loved Sonar for years and am happily enjoying CbB now.
I also purchased the Garritan Steinway, and I have to say,
in my humble opinion that the impulses in the Garritan/Aria player are phenomenal,
some of the best I've ever heard, but they all have the pwav extension.

Is there ANY way to turn them into wavs, so I can use them in CbB's REmatrix Solo convolution reverb?
https://www.cakewalk.com/Documentation?product=SONAR&language=3&help=ProChannel.12.html
Whoever recorded/produced the Garritan impulses was a total genius.

I'd love to be able to apply those convolution impulses to other instruments.
Voice, under snare mic, room mic, etc.

Any ideas about how to go about this?

I know it's a very tech specific question. How many people here have even heard of pwav?

But thanks for trying!