Connecting TCP Sink to VLC media player

Hello all,
Problem when I send my audio stream from the TCP Sink to a media player.
I have read the earlier mails and tried the examples with TCP
Source/Sink in GRC.
They look like this:
(tcp_sink_test.grc): Signal Source --> Throttle --> TCPSink
(tcp_source_test.grc): TCP Source–> WX GUI Scope Sink
And they work well.

Actually I would like to hear the Sound from a median player (like VLC
media player). So I replace the Audio Sink from the “dial_tone” example
with the TCPSink(tcp://
Then I open the VLC media player and give this address to VLC.
“tcp:// - VLC media player” is showed on the top of the
VLC window and the WX GUI Slider is also showed, so that I can change
the volume and the noise. But I cann’t hear anything from VLC…

But when I run this Flow Graph: File Source(with a wav file)–>TCPSink
This time I can hear the music that I imported in the File Source. So I
suppose that my VLC player itself is not brocken.

Any idea why the still?