Well, I couldn't wait hehe. Wave's now support 8 bit and 16 bit audio. Which is good, as the 8Bit for simple effects can really save on sik space and memory requirements.
I update the svn. I also added two sample's - one is an electric sound, I guess the kind of weapon a robot might have. And the other is a shotgun..

Press and hold either mouse button for a taste. Of course, these things don't have to work like this, (ie. releasing mouse button stops audio right away), it is just a demo.. really, you would verify you have ammo, then the gun would fire at what ever repeat rate you wanted.