IIS Media Services 4.0 is a set of media-related extensions for Microsoft Internet Information Services (IIS) 7 and higher.  IIS Media Services provides an integrated HTTP-based media delivery platform, and includes:

• Smooth Streaming. Enables adaptive streaming of on-demand media files for Smooth Streaming-compatible clients, including Microsoft® Silverlight™.
• Live Smooth Streaming. Enables adaptive streaming of live media broadcasts for Smooth Streaming-compatible clients. A new Live Smooth Streaming feature in IIS Media Services 4.0 Beta 1 enables delivery of live media broadcasts to Apple® mobile digital devices.
• Transform Manager. Enables conversion of on-demand media files to Smooth Streaming presentations for Smooth Streaming-compatible clients and enables conversion of Smooth Streaming presentations to MPEG-2 TS segments that can be played by Apple devices.
• Advanced Logging. Provides rich, real-time client- and server-side logging.
• Bit Rate Throttling. Meters the speed at which media is delivered to a player.
• Web Playlists. Enables secure sequencing and server-side control of media content.

• Advanced Logging, with real-time client- and server-side logging
• Application Request Routing (ARR), providing HTTP proxying and caching
• Transform Manager, runs encoding tasks to convert media files to on-demand Smooth Streams for Silverlight clients and Apple mobile digital devices.

Get the x86 version @ http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=9f84437d-4380-49f6-acda-bd0d3534e27a.

Get the x64 version @ http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=1b84b694-3cba-4746-9e8f-a55e5b8e2f79.

Get the Transform Manager @ http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=2655d83b-c4b7-4ca5-9d60-ebc4bc6dd8b5.