Streaming music in windows mobile 5(Plz Help)

Question

Hi, I have been working on a project of deploying a portal for streaming music using windows media player 10 mobile for Pocket PC. This portal would be open by using ie in pocket pc. I try open the web in windows mobile 2003 and it works fine. But when streaming to a pocket PC using Windows Mobile 5 this error came out:

"Cannot perform the requested action at this time."

Please somebody help me.
Thank you...