I just pushed an update to the plugin to Codeplex with the following features:

• Support for updated Azure Blob Storage Library from November 09 Azure SDK enabling
  • Upload progress is reported
  • Very large files can be uploaded since a chunk-based upload scheme is used.  Chunks are validated with an MD5 hash.
  • Uploads can be restarted in the case where a failure occurs or if an upload was previously cancelled
• Standard settings enhancements
  • Preview from origin server or using CDN
  • Display of code snippet for inserting published video project into web page
• Advanced settings
  • Preview and delete published projects

The updated plugin now offers equivalent functionality to the (now deprecated) Silverlight Streaming Publishing plugin.

To install, unzip the archive and drop the two dlls into

%programfilesx86%\Microsoft Expression\Encoder 3\Plugins.

The plugin is also fully supported by the Expression Encoder Powershell cmdlet as I’ll illustrate in my next post that describes my personal process for migrating existing Silverlight Streaming video projects to Windows Azure Blob Storage.

Hope this Helps.