Windows Media Player - Enterprise Deployment Pack

http://www.microsoft.com/windows/windowsmedia/forpros/enterprise/deploypack.aspx

This is a cool tool. Useful on Windows XP especially, to allow us to preconfigure all the settings in Windows Media Player, including a "corporate skin" which is really cool and removes a lot of the store, radio station and other buttons we don't really want users clicking on.

It builds the configured installer into an MSI that can be run by restricted users.
This also helped us on XP where it's more difficult to set some of these preferences in a default user registry because they get over written by XP's "Active Setup"