The general concept for this plug-in is top notch! However, after using it I find it to be very buggy, especially with later versions of WordPress. There does not seem to be the compatibility and the programmer does not respond to support requests. It seems to me that either the programmer is just plain lazy & can't be bothered to update or support his/her product or they've lost interest.
I've also had problems "Rolling my own" custom themes for this plug-in, using http://jqueryui.com/themeroller but when I upload them, they don't work.
Whatever the case, I wouldn't recommend you download this. I'd suggest either writing your own or getting someone on Elance to write one for you.