This are the sources of the Eclipse Java Project "osmToOrbiterXMLRWConverterr".
With this it's possible to parse an osm xml file to generate orbiter .bas files.
Read here how you can import this into Eclipse:
http://agile.csc.ncsu.edu/SEMaterials/tutorials/import_export/index.html#section2_0
If you modify the sources and you get better results, you can public it yourself again here or send me a mail / a message over orbiter forum with the new sources included, so i can update it.
Feel free for use, but i'm happy if you public the sources again after modifying.
An export example: http://orbithangar.com/searchid.php?ID=5109
A xml example, exported from openstreetmap: http://orbithangar.com/searchid.php?ID=5107