The latest version of Affix is available on the official Affix web site

Now Affix is included in popular linux distribution Debian (testing/unstable) and you can apt-get all needed packages. Affix is divided into next packages.

affix - User space utilities for the Affix Bluetooth protocol stack.
affix-common - Common files of the Affix Bluetooth protocol stack for Linux.
affix-headers - Header files of the Affix Bluetooth protocol stack for Linux.
affix-source - Driver source for the Affix Bluetooth protocol stack for Linux.
libaffix-dev - Development files for the Affix Bluetooth protocol stack.
libaffix2 - Libraries for the Affix Bluetooth protocol stack.
      

There are also rpm packages for RedHat like distributions. You can find them here