Can't play wma-station Blackberry Bold 9000

I listen since a long time the station oe1 with the url http://stream4.orf.at/oe1-wort (WMA) on my LapTop or desktop-PC and now I try to make it work on my Blackberry Bold 9000.
It does'nt work, I get the error-message that the protocol is not supported. I had the same message before I worked with moodio). Other stations works properly, but they are MP3.
The oe1-stream is encoded in WMA (I have discussed it already with the specialists of the station, the other URL http://stream4.orf.at/oe1-wort does not work either).
Has anyone expirience with WMA-streams ?