This post introduce you to improvements made in RDP in Windows 7 and Windows Server 2008 R2 to enhance your audio and video playback experience in remote sessions. Media playback experience has been improved by efficiently transporting audio/video-based multimedia in a compressed format within the RDP protocol. The feature’ll enable users to experience smooth, reliable playback of multimedia video content played back through Windows Media Player. If the client supports multimedia redirection, it’ll receive the original compressed multimedia stream from the server and decode it locally for display. This’ll decrease bandwidth usage since the data over the wire’ll be compressed video instead of a succession of bitmaps.

Full Article: RDS Blog