from what I remember it should be right click > tracker add-ons > zip-o-matic.
Haiku ports should have the latest version of those drivers, and it will put them in boot/common/~ , but I don’t know where BePodder would look for them.
place the files in /boot/home/config/lib or /boot/common/lib , either will work. /boot/common was created for multiple user support, not implemented yet.
If you don’t want libraries used only by a single app “pollute” the system, you can also try to put those libs directly in a “libs” subfolder inside BePodder’s folder. Normally, that’s where an app should look first for needed libs. Don’t know if that’s also true for ports, but it’s worth a try.
You can find a filesystem layout in the user guide at http://www.haiku-os.org/docs/userguide/en/filesystem-layout.html but it’s not that detailed and I don’t know it really should be, but it shows the system behind it all. After all the naming of folders in Haiku is pretty transparent IMO.