As someone wrote to the wiki (see link below) it would be nice to have a LaTeX-export feature, which is not very comlicated at first.
I would like to implement it and will post my work shortly.
From the wiki:
The request only asked the feature of exporting MindMap to a structured LaTeX document. Could it be possible to make MindMap be able to export a tikZ diagram which can be integrated into LaTeX? I know there is a tikZ library, but it is simple and very different from FreeMind. If you can develop such a feature there will be aweful! Thanks.