The majority of Windows Media streams use either HTTP protocol on port 80 or MMS protocol on 1755 - you can find a full list at http://www.microsoft.com/windows/windowsmedia/forpros/serve/firewall.aspx#Unicast though which should get you going :-)
Peter Jarrett, Technical Director
Broadcast Radio Ltd.
Bill Bailey: No win, no fee, no basis in reality. Just a room above a minicab office in Acton and a steady stream of greedy simpletons whose delusion is only matched by their clumsiness