Hi Frank - I think OBJ export should put materials in a zip folder for you. This is the only way to move Materials to another app from FormIt.
On web - go to Export - you can choose to export local or A360 (both work the same) - then choose the OBJ option from the dialog
When you browse to A360 or local downloads folder you'll see a zip file with your file name - and inside you'll see an mtl file and textures used
Then in your receiving app you'll need to import obj and the mtl file (also in the zip folder)
I found this thread about how to import mtl into Unity - might be helpful for you
http://forum.unity3d.com/threads/how-to-import-a-mtl-file-in-unity.102364/
Thanks,
Tobias
