Steps for Integrating DRM in Silverlight

steps needed to integrate DRM into Silverlight:
• Set up the necessary server infrastructure to serve up DRM protected content.
•Point to this protected content from your Silverlight application using MediaElement.
•Handle expected errors (for example, when the end user does not allow DRM content).
•If needed, subclass the LicenseAcquirer class to gain custom business logic.

Limitations When Using Silverlight DRM

•Silverlight does not support all the file types that PlayReady does. Silverlight DRM only supports Windows Media Audio (WMA), Windows Media Video (WMV), and PYA/PYV files for PlayReady.
•PlayReady license can specify rights and restrictions that define exactly how the content may be used and under what conditions; however, when using Silverlight DRM the only license type available is a non-persistent, play-once license
•No license caching