Fastdial should allow links to be set to "popup." They would not navigate away from the Fastdial page, but rather, would create a new window, and display the page there. This would be a per-link option. For example, someone could place "http://www.pandora.com/?cmd=mini" as the URL of a Fastdial button, set it to popup, and when they clicked it, it would bring up the Pandora Mini Player.