The PmWiki extension media2mult is open source and licensed under the GNU General Public License, version 2.
If you'd like to install the tool on your own server, you can download the necessary source files from this page.
All necessary information about prerequisites and the installation itself can be found in the file INSTALL coming with the archive.
media2mult sources (date 2009-08-27)
For further information, bug reports or constructive comments feel free to contact martin.gieseking at uos.de.