I love the idea and effort, but when I first tried using it I got a network timeout error when I tried uploading 1 chapter of a PDF book (45 pages, 7MB).
FYI the flash blocker in chrome doesn't register that there's flash content on the site. I had to click around quite a bit in order to get an option to enable flash.
Better yet, you should use the Web Audio API and fallback to flash for unsupported browsers :)
You should offer a direct link to the started app (without having to click the button). This way users can plug it into websaver or something and make it a screensaver.
Same here. You might want to consider making the "try it now" button/link more prominent and above the login form. My 1st instinct was "Oh I have to sign up, forget it."
