> First: can I import Brainforest outlines into the outliner?
>
> Second: if so, can I also import attached notes (as subheads)?
No .... but: here's a work-around:
[1] Open the BrainForest outline in JOE (http://JavaOutlineEditor.org)
(It stores attached notes as subheads).
[2] Save the outline as an OPML.
[3]Open the OPML in Radio.