Xphp, pirating software is the same as stealing. While it may seem less wrong than walking into a Walmart and shoplifting, it is still ultimately the same thing.
And whether or not you prescribe to that philisophy, the TOS of these forums do.
As for purchasing FlashMX... are you a student of some sort? Often times there are student discounts for such software, and sometimes significant ones (like with Adobe software).