Dave points out that Macromedia is supporting Radio Themes in Dreamweaver MX:
Many thanks to Macromedia for supporting Radio in the latest release of Dreamweaver. “For Dreamweaver MX developers, the kit contains extensions for website building and application development. The extensions help display data in PHP applications, add functions to the file menu in Dreamweaver, and edit themes for sites developed using Radio Userland for editing weblogs.” [via Scripting News]