One of the difficulties open source software faces is in implementing support — where it is even possible to do so — for the wide variety of codecs, formats, and other proprietary technologies that users have come to rely on. One such technology is Microsoft's Silverlight framework, which until early this year, was a no-go for Linux users. That changed in January, when the first version of the Moonlight project — a collaboration between the Novell-sponsored Mono project and Microsoft, begun in 2007 — was released