Flash can come in so many forms and expect so many different input 
(some flash presentations will expect specific key presses, others 
will expect mouse events or clicks, again others a mouse wheel event 
and so on), that it'll remain impossible to support it.

You can, however, always use Remote Buddy's built-in Behaviour 
Construction Kit to create your own Behaviour to control your specific 
Flash animation. More information on the "For Developers" section of 
this site. A video tutorial (suitable for non-developers) can also be 
found there.

If all you need is the emulation of cursor keys, the built-in Virtual 
Keyboard Behaviour will already fit your needs.

Best regards, 
Felix Schwarz