The previous Silverlight-replacement, Moonlight by Novell, is now a dead project and incompatible with the most recent Firefox versions. BT appear to be unwilling to resolve the discrimination against Linux users.
My work-around so far is to install Wine and then the Windows version of Firefox. followed by Java, Flash & Silverlight. This arrangement works for BBC iPlayer, ITVplayer etc but fails to start video on BTSport.com .
Ideas? Please use the contact page above.