Hi, i want to thank this thread for the info about the json file format. i'm trying to make a GUI for this and been using it on my kindle. i've posted it on my blog if anyone is interested (mickeymickstechblog.blogspot.com).
umm, but it is for Windows only. and i haven't tested/tried it on any other kindle.
note: sorry for plugging in my blog. the admin can delete it, but pls do leave the "thank u" part. hehe