There is No Sound in Windows Media Client,Help me~

#1
I've tried for 6.20.1~6.20.3,Also 6.12.1
I wanna use Prog Media Server to stream to a windows media client
BTW,It works normally on the server with ProgDVB,including the video & sound.
I can play the video with WMP on the client and server PC ,but there is no sound.
So I checked out the Audio Codec Options and found a problem:
I CAN NOT change the Audio Bitrate..
Then I found out the audio infomation on WMP of the client and server PC that shows :"Windows Media Audio 9.1 0 kbps, 8 kHz, mono 1-pass CBR"

How can I do?

PLS help me,THX!

Following is my setting:
Step1.Choose Windows Media Streaming
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Step2.Select Channel
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Step3.Set Video & Sound,I CAN NOT change sound bitrate here
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Step4.Choose interface & port
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5. WMP info on Client PC
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I've no idea now~~~ :cry: :cry: :cry: