did you look into it? if you did you would have found JODConverter and realized it is exactly what you are looking for.
The only solution I am comfortable with thus far (because I have used in the past) is using Sun’s “Open Office” in headless mode (on linux command line) to convert powerpoint presentations into SWF files.
We have to utilize JODConverter (which is JAVA based).
I’m 99% sure this will be the most desirable path, but we should certainly do some additional research into other solutions.
I can't post links because i'm a new member.