This fastaudio module is released under the GNU General Public License. http://www.gnu.org/licenses/gpl.html Written by David McNab Copyright (c) 2003 by David McNab If you wish to use this library in a commercial AND CLOSED-SOURCE product, please contact me and we'll discuss a licensing arrangement that will legalise your usage in this context, in exchange for furnishing me with a negotiable amount of hard currency commensurate with your project, company and circumstances.