You can get an overview of and download-links for the re-motion binaries on the
- re-motion community website
or here, directly on the - re-motion web-site
As explained in the comments, you need an older version (1.13.6) for working with the PhoneBook tutorial.
As for the re-motion sources, you get them from this subversion repository
You can get a Subversion itself here: http://subversion.tigris.org/