Record a conference

I'm trying to save the audio from a Conference Meeting (created in a UCMA App by a UserEndpoint)

// Create an AudioVideoCall.AudioVideoCall avCall =newAudioVideoCall(conversation);// Register for AudioVideoMcuSession events.RegisterForAudioVideoMcuSessionEvents(conversation.ConferenceSession.AudioVideoMcuSession);// Register for AudioVideoCall events.RegisterForAudioVideoCallEvents(avCall);// Establish call to MCU
            avCall.BeginEstablish(EndCallEstablish, avCall);// Wait until call establishment completes
            waitForCallEstablish.WaitOne();

            recorder =newRecorder();
            recorder.AttachFlow(avCall.Flow);
            recorder.StateChanged+= recorder_StateChanged;WmaFileSink sink =newWmaFileSink(avCall.Conversation.Id+".wma");

            recorder.SetSink(sink);
            recorder.Start();

The Code seems to excecute fine no error's showup, but I can't find the file.

So i have the following question:

1-Where the file should be?

2-When should you start recording?

3- How i get the AudioVideoFlow from a conference or conversation object.

Regards,

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