Directly from the Readme.txt file:

This utility and its associated code and programming are copyright(c) Curtis Zimmerman and L0j1k.com. It is subject to the Creative Commons Licence (CCL), all rights reserved. The CCL can be found at the following address:

http://creativecommons.org/licenses/by-nc-sa/2.0/

You may modify, cut'n'paste, implement, chop up, skewer, change, re-implement any and all of this code for NONCOMMERCIAL purposes (meaning that you can't sell the code, and if you were Microsoft you couldn't -- without special written permission by the original author -- USE the utility and its associated code and programming on your commercial site) only by crediting the original author, Curtis Zimmerman and L0j1k.com.

If you have questions about using commercially, selling, repackaging, licensing or leasing this software, please contact the original author at L0j1k@L0j1k.com. By using this utility and its associated code and programming, you also agree that the original author, Curtis Zimmerman and L0j1k.com, cannot be held liable for any loss of data or service that you might experience because of this code or your use of it. Basically, you can't come after me or my website if this stuff screws your stuff up.