http://support.syntrillium.com/updates.html
is where you can get the info you wanted. But I personally do all my music with guitar tracks pro because of its ease of use not to mention that it has one of the easist and best wave editors there is. I suggest if you plan on making this a major project that you download the demo and give it a test run at
http://www.cakewalk.com . The main differance between the cool edit and the gt pro that i have found is that the gt-pro is
extremly user freindly and you dont have to spend a few hours in the manual just to do something simple as I can tell you from experiance, that the most important thing on a consumer level is for a program of this nature to not only be freindly to the user and have a decent interface, but also be able to produce quality recordings. and although the cool-edit[pro] provides many great features, it just dont cut it when it comes to the interface and ease of use as it takes a bit to navigate through the various screens.
Good luck on your project
RG~
RGteam~