The scripting engine with bindings, physics and the weird little sound engine, ChipSound, now available here; full sources that “should” build on Linux, Windows and probably various other platforms without too much tweaking:
Win32 build + support scripts (GUI toolkit, config file management and stuff like that) will be available in a moment.
Win32 build with the aforementioned support scripts. SDL and other DLLs included, so just unzip somewhere and start k2x.exe for… a not too interesting demo app/skeleton. Well, at least there’s a nice logo + jingle!