@pstudio: I know this is off-topic, but I have had no luck so far getting an external java library to both compile + run successfully without compiler errors or just runtime crashes...

I have tried slick, lwjgl and jMonkey.

I don't suppose you could share a working bare bones minimum jmonkey project that compiles and works under Oxygene so I can see what I might be missing?
I have wasted a day on this and I am rapidly running out of time with the competition if I want to use Oxygene