Well, I was a bit bored this evening and didn't want to tackle anything too huge, so I made this as a plugin. I'm not 100% happy about it, because for some reason their JS doesn't play nicely if you do that. Or maybe I'm just tired and doing it wrong, don't know but it never worked properly unless I used their exact code for some reason.
It's really not that exciting but it has all the usual refinements (admin page, etc.) and it's in the plugins SVN repo too.
(Moving to Plugins since it's now officially a plugin :P)