Actionscript 3 :: CI-friendly Automated Builds For As3/flex Projects

We're currently developing a flex web app and our build situation is far from ideal. At present we're (as in individual developers) just building using FlashBuilder and deploying manually. The programmers are currently screaming bloody murder for two reasons, though:The lack of CI is like going back to the stone ageWe don't much care for FlashBuilder(Note: We're only using FlashBuilder because it was the easiest way to set up a flex project in conjunction with Away3d and get it building / rendering correctly -- it's a stopgap solution).As a predominately .NET development shop, we're used to doing continuous integration as well as continuous deployment. Ideally, we'd like to get something comparable to this for our flash projects without tying ourselves to a particular IDE.

Requirements:

The build process must be:

.. runnable via the commandline
.. runnable on both developer and CI build machines (and certainly not requiring an IDE!)
.. preferably as IDE-independent as possible (pragmatism will kick in though; if this causes a lot of friction we'll just pick one).
.. able to run on Windows (we develop using Windows)

We don't mind a touch of duplication or a few manual steps (e.g. tarting up the build scripts if we add a new project via an IDE, or generating one configuration from another if tools exist), but the less duplication / maintenance required the better.