I'm sorry but I've been extremely busy lately. I've cleaned up the code a bit and I'm releasing it here. I'm hoping that rAf could maybe continue building on top of it. There are a few issues, but it's very usable. I started implementing a History view but then found out that the API doesn't support it yet, but the code is almost ready.
Here is the project:http://www.designplastik.com/h/misc/newzbin.tar.gz
If you have a mac you can try it in the simulator but to put it on the device we need to find a way to get it into Cydia/Installer. I'm hoping that someone will figure out how that is done.