if the windows media player plugin is missing, download this file "np-mswmp.dll" (extracted from the Windows Media Player Firefox Plugin) from this link:
http://cid-be9820fd50cda5c0.office.live ... -mswmp.dll
open Srware Iron Installed folder, "C:\Program Files\Srware Iron" and create new folder "Plugins", with "np-mswmp.dll" into. and windows media player work with Srware Iron.