Second there is already a product out there called jaws: http://www.freedomscientific.com/Products/Blindness/JAWS
The last time I checked (and my information is very dated, 5+ years) this was a fairly popular piece of software in the blind community. I also do not know the status of trademark around the term. If you were going to change names, its early days for you now would be the good time to do it.
I doubt that FS will come after this project for trademark infringement, since it's not a threat to them, not even in the same field.
(pronounced "J-Sauce" in case you were wondering)
I'm not affiliated with Amazon, nor do I know anyone over there. I'm a freelancer in Oakland, CA., and my goal is merely to offer some open source code to help people take advantage of emerging tech so that they can build ridiculously cheap and scalable web apps.
When you get a chance, think of this post and come back and read it again!