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Playlists are pointers to .asf files or ASF streams. Each file or stream is referenced by a URL�for example, mms://server/sample.asf or mms://server/alias. In Windows Media Services, there are two types of playlists�client-side and server-side.
Client-side playlists are lists of files and streams in an .asx file. Playlists are created using a text editor and standard Extensible Markup Language (XML) syntax to create a list of .asf file references in an .asx file.
Sometimes you may wish to create playlist based on user requests or demographics data. You can use Active Server Pages to dynamically create personalized .asx files based on user requirements. In addition, using the Membership Server and Ad Server features of Microsoft Site Server version 3.0, you can create Web pages that dynamically build a playlist of live stream URLs intermixed with personalized commercial .asf files that target the personal tastes of viewers
Server-side playlists are the lists of .asf files and streams in a Windows Media program. Use server-side playlists to set looping and stream durations. Server-side playlists cannot be dynamically generated by Web pages. For more information on server-side playlists, see Using Programs and Streams in the documentation installed with Windows Media Services.