Sign up for the tryout at http://www.adobe.com/special/notifyme/dvtryouts/main.html
The product details are at http://www.adobe.com/products/audition/main.html
I have it installed if there are any questions that the adverts don't make clear.
While rummaging around on another matter I came across http://www.adobe.com/products/tryadobe/main.jsp#product=92 which says....
"Adobe Audition 1.5 tryout
Adobe Audition 1.5 ™ software is a professional audio editing environment. Designed for demanding audio and video professionals, Adobe...