Streams not working with Blackberry Bold 9700

Since I've a Blackberry 9700, I can't listen to Yourmuze anymore. The mediaplayer won't load the stream. I've searched the internet for solutions, but couldn't find a working solution. In order to let the thing work, I recently update he systeem software for the Blackberry. Its now version 6.0.0.207 bundel 2475, and still I cant listen to my favorite stations. Please can you help me or at least give me a clue?
Thanx, Erik