Bulk-Loader really works. Just attention that because there is a delay of downloading textures form internet, you need to repaint the textures to your objects after they have been loaded. Otherwise, nothing would be changed, although the textures are loaded correctly.
BitmapFileMaterial works too and it's easy to use, but it doesn't support shade materials. If you want apply a directional 3d light on the object, you'd better use Bulk-Loader or something else. Good luck.
