I have developed a cms, (almost) entirely from scratch, that I would like to release. for free. But I have incorporated a few libraries that I did not write, for instance, it uses jQuery (which is dual licensed under the MIT and GPL licenses), and flot (which is also licensed under the MIT). I need to know what license I have to release the new package under so that everything is kosher and so that I don't step on anyone's toes. I don't know much, if anything, about the legalize of it all, I just don't want to get in trouble. hah. Also, it would be nice if I could get a license that would prohibit folks modifying a tiny part and then selling it as a new package. Thanks for your help!