Project DescriptionButtercupReader is a Silverlight application that can display and read digital books in DAISY format. ButtercupReader includes lots of examples of accessibility features including colour usage, zooming, UIAutomation, gestures, self-voicing and more.
The first public release of ButtercupReader has been deployed to
http://www.buttercupreader.net.
There's also a blog
http://www.buttercupreader.net/blog.