XmiX can be freely used, distribuited, modified, copied according to the terms of the Standard Improved BSD License.
Standard Improved BSD License is the version of the BSD license that Pd uses and that most people mean when they say “BSD License” nowadays. It resulted from the idea of Richard Stallman to get everybody on the BSD license to drop the Advertisement Clause, which was not only conflicting with the GPL, but also with customised versions of the BSD license….