I know this is incredibly selfish, but is there any chance of releasing an open source version of this ever? There are several things I'd like to work on myself
Not sure if Vlambeer would allow that. I'd also be releasing their source code.
I don't really know exactly how the legal workings are for that, but the source you built upon is already available to the public (I assume). But I definitely understand. I've started my own port in the meantime :)