Hi,

The output.dummy is not the right approach in your case I think: you want
to observe what you are streaming and not create another stream just for
visulization. Also notice that all the operations that you apply to your
stream after the output.icecast won't be heard. So, I would modify your
script to something along the following lines:

On Mon, Jul 9, 2012 at 12:11 AM, Derek Shaw <de...@techsys.co.uk> wrote:

>  #!/usr/bin/liquidsoap
>
> # Define a Log file to monitor output
> set("log.file.path","./soslug_**alsa.log")
>
> # Not used but this would define audio file to record a stream
> recording = "soslug_jack.mp3"
>
> # Define the stream input source
> stream = mksafe(audio_to_stereo(input.**alsa()))
>

# I guess that you want to hear the smooth_add on icecast too, so it has to
be performed before the output.icecast!
stream = smooth_add(special=delay(3.,blank(duration=4.)),normal=stream)

# Visualize the stream
stream = visu.volume(stream)


> # Define the icecast oput format etc..
> output.icecast(%mp3(bitrate=128),
>      host = "soslug.org", port = 8008,
>      user = "<username>", password = "<password>", mount =
> "soslug_alsa.mp3",
>      description = "Liquid Soap application Streaming by Southend on Sea
> Linux User Group",
>      url = "http://soslug.org:8008/soslug_alsa.mp3";,
>      stream)
>
> # Defines output format for stream to be recorded
> output.file(%mp3(bitrate=192), recording,
>         fallible=true,
>         on_stop=shutdown, stream)
>
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