Just to be clear. From OSI (see <a href="http://www.opensource.org/docs/osd" rel="nofollow">http://www.opensource.org/docs/osd</a> ):
"1. Free Redistribution<p>The license shall not restrict any party from selling or giving away the software as a component of an aggregate software distribution containing programs from several different sources. The license shall not require a royalty or other fee for such sale."