Is it possible to nest folders in the Flash Builder bin-debug

Question

I'm trying to setup my bin-debug folder so that the structure looks like this:

• bin-debug
  • assets
    • img
    • swf
      • main.swf
  • css
    • style.css
  • js
    • swfobject.js
  • index.html

I've tried setting the project's output folder to: bin-debug/assets/swf which does get my main.swf where I want it, but then my other source folders get dumped into that swf folder as well. What I would really like is to tell Flash Builder to put my swf into a nested folder and to be able to specify where my build folders' output goes as well. Is this at all possible without resorting to ANT scripts?