RTSP streaming using DSS and JW Player!

Hi All,
I am implementing streaming on mobiles as well as PC's. I am using Darwin Streaming Server and JW Player. DSS supports mp4 and 3gp formats. Am able to stream videos to PC's and Laptops. But am not able to stream videos on mobiles using JW Player. I have followed link : http://www.longtailvideo.com/support/jw-player/jw-player-for-flash-v5/15995/jw-embedder-reference-gu...
to embed player. I am using HTC Legend mobile for testing. Am using protocols like rtsp and http progressive streaming. Any suggestion would be greatly appriciated.