The latest release of Adobe’s flagship professional audio tool, Audition 3, supports both Windows XP and Vista natively. You can also run Audition 3 on OSX using Leopard’s Boot Camp or virtualization software from VMWare or Parallels. Here’s a link to a recent post on our Inside Sound blog discussing the various options for running Audition on a Mac.
http://blogs.adobe.com/insidesound/2008/02/audition_3_on_a_mac_1.html