This package was compiled by Christian Perfect (http://checkmyworking.com) from the Computer Modern Unicode fonts created by Andrey V. Panov (http://cm-unicode.sourceforge.net/) They're released under the SIL Open Font License. See OFL.txt and OFL-FAQ.txt for the terms. A demo page for these fonts was at http://www.checkmyworking.com/cm-web-fonts/ when I released them. I can only apologise, citizen of the future, if that address doesn't exist any more.