Where do you live?
First of all, I agree that the SDK should be public so that more people can try programming.
I especially think that this would be an interesting tool to teach audio programming with.
However, concerning business licenses, you don't need to spend $800!
Here in Santa Clara, California, it costs $15 for the license plus $32.35 for a "Home Occupation Light/Ordinary Hazard:" inspection.
So, basically, $47.35.
Of course, price may vary depending on the city you live in, e.g. San Jose is $150/year or so.
But $800? Propellerheads isn't asking you to form an LLC !
so, check your city, or just google it "business license in (your city)