you have to export every model to mdl7 twice. once with the first uv-set activated, and once with the second uv-set activated. then you can load them with my plugin.

since blender can directly export to mdl7 the workflow is nicer than with gile[s] where have to do detours over different model formats.

of course it would be even nicer if there were a complete scene exporter which exports all light mapped objects in the scene twice automatically and also writes a wmp file. i don't know when i will have time to do one. first i have to figure out how to use wmpio.dll from python and my guess is that it would take me one day then.