Once you have added content to a playlist, it must be saved as a
.wsx file in order for the publishing point to stream the content.
In File name, type the location where you want the file to
be saved and specify a name for the playlist file.
The server does not use your user account to
access folders and other resources; it uses the Network Service
account by default. If you are saving your playlist file to a
location other than C:\WMPub and its subdirectories, make sure that
the folder is shared and that the Network Service account has at
read and write permissions for the folder. If the Network Service
account does not have permissions for a folder, the server will not
be able to save to it. For more information about rights and
permissions, see Understanding