In the console tree, click the broadcast publishing point you
want to use to rebroadcast archived content.
In the details pane, click the Source tab.
In the Content source section, click Change to
locate the archive file of your broadcast.
To announce the publication of your content, click the
Announce tab, and then click Unicast Announce
Archive files can be created by either Windows
Media Encoder, an encoder based on the Windows Media Encoder SDK,
or Windows Media Services. If the archive file was created by
Windows Media Services, you can determine the archive file name
from the archive data writer plug-in associated with the original
broadcast publishing point.