Play media files from Win 7 Media Player(DLNA server)

Hi,

I made an AIR Application by using NetStream, NetConnection and Video object to  play mp4
files which are stored in a web server using http.

The web server is on Win 7 OS and I use the WMP 12 as DLNA server to provide the media data.

But the problem is I keep getting the error message , such as "NetStream.Play.StreamNotFound".

If I change the same code to a flash project not AIR project , it works fine without any error.

I thought it wasn't a security problem , because I run the AIR locally at Win 7 and got the same

error message.

I am not sure where to start for debugging this issue.  The fact that VLC also can retrieve the file.

PS:

The file url is something like

"http://***.***.***.***/WMPNSSv4/3577400942/e0NBNEVGM0EyLTk2RDUtNEE1Ri05QTM2LUI0MzUzMkY0QUU 4NX0uMC40.mp4"