On my desktop I woud like to run a proxy or a plugin that would allow one to change the responses received from the server. I would love to use Greasemonkey for this, but Greasemonkey (at least the last time I checked) can't run on requests made by the flash player.
Anyone have any ideas of something that can actually intercept the responses sent by the server and run a configurable regex or script before it gets to the Flash plugin and web browser?