There was an awesome little application floating around here somewhere, called Reproject Image, or something like that, that may have an orthographic-to-XXX projection capability. I can't remember where the thread was. :/ It would still require quite a bit of hands-on work... not an automagic type of thing, but it might help. If you can get it into equirectangular then you can play around with projections more easily in NASA's G-Project application.
I don't know of anything else that might be useful to you... those are the only map projection programs I have experience with, limited though it is.