This week's book giveaways are in the Scala and Android forums. We're giving away four copies each of Machine Learning Systems: Designs that scale and Xamarin in Action: Creating native cross-platform mobile apps and have the authors on-line! See this thread and this one for details.
That isn't a deployable zip file. In particular, it doesn't have the jforum.jar itself. You need to run an Ant build to create something you can deploy from the package. One way to tell is that the URL is github which is where developers work on it.
Or you can use a zip download that is intended to be deployed.