The Moonlight project, which aims to produce a 100% open source implementation compatible with the Microsoft Silverlight plug-in, with Microsoft's official support, has reached an important stage of its development. Moonlight 1.0 version Beta 1 is now available for download, said Christophe Lauer. This release supports the Microsoft Media Pack for playing back video and audio files. These are the same video and audio decoders that Microsoft uses in Silverlight 2.0.

Check our Moonlight roadmap for details on upcoming versions. You can try some of the sites tests that we used to test Moonlight.

Here are some Silverlight 1.0 materials:

• How To Videos on Silverlight 1.0
• Essential Silverlight Training.
• Silverlight 1.0 Unleashed. This is my favorite Silverlight 1.0 book, one of the books that we used to get some of the Moonlight team members up to speed.

You can also read the Silvelright's XAML vocabulary description and its XAML Foundation Specification.