With latest thinBasic preview 1.3.0.1 all thinBundle functions are present and documented.
It is now possible to programmatically create executable using a support script.

Let us know any inconvenience or any difficulty you encounter and we will try to fix or improve it asap.

Please remember the following:
instead of creating a multimegabyte single executable full of media files, it is better to create a small as possible executable and leave all support files (like 3D models, sounds, textures) in some subdirectories. Than zip all in a single zip or rar file to be distributed.
This method will speed up bundled execution.

Thanks
Eros