Thanks TCD, myself and Jaco tried it two player using FS-UAE tonight, works a treat. A bit laggy, but for actually testing the two player mode very useful. Very fun, too. Had a ball playing it with another human.
We've come up with some recommendations to make two player mode a little more playable, and have some bugs that need to be addressed that were missed prior to release.
So, I'm going to have a think and possibly do a v1.1 to fix up the 2p mode.