Hi! Are there any Blender scripts that can correctly export armature objects in the way that can be used without knowing Blender sources? (the best way for me: bone matrix+weight, but other ways also can be)

I don't think you need to know the sourcecode, I think they do have a plugins SDK, don't they?

Yes, they have but without armature support:(

I just don't want to mess up with tons of IPO's or some other things, I'd only like to read in matrices and weights..

The Cal3D project includes with it some Python scripts for Blender regarding exporting armatures and the like that you can take a look at if you wish.

thankx.