I can rectify that. GUI graphics can be found here:
http://www.tdb.fi/~tdb/aogui.tar.gz
Textures will take a bit to sort out since I'm at work atm and have to transfer the 630MB of textures here, not to mention going through all 11244 of them to find the one for hecklers. If you'd like the whole package, I can PM you a link (don't want to make it public to avoid getting my ADSL flooded with downloads).
Unfortunately I haven't managed to decode meshes yet, so I can't provide you with 3D models to test the textures on.