I packed all .jars and natives (both Windows/MacOSX) in a single installable zip file for Processing. It can be found here. All the files contained in the archive have to be copied into odejava/library folder into your Processing libraries folder. I also included Apache and Odejava licenses, I think that’s ok as far as the binaries of those liraries are only redistributed.
The little falling boxes example can be now downloaded there.
Problems have been reported on MacOSX which are discussed in the Processing forum.