Eliminate local audio when streaming

[triplebit]

I use vlc with the following advnced stream settings(using "dshow://" as the source)-
":sout=#duplicate{dst=display,dst=std{access=http,mux=asf,dst=10.0.0.11:8081}}"
It works fine at the local PC including audio and video and the remote node can recieve the stream.
Now I want to eliminate audio locally and have it only streamed to the remote PC.
How can I modify the above paramter?

Regards
Ramzi

[VLC_help]

Mute or setting volume to 0 are the options that come to my mind (AFAIK neither one works from customize field).