GJD capable

The video above celebrates the fact that my "engine" can now pull a vdx from a gjd directly and play it (previously, in case you haven't been following, I had to extract the vdx with a command line tool first).

Enough with procrastinating. Now I have no excuse but to attempt some disassembly. Well, I could work out how to do sound / xmidi, but I think I'll save them for later.