Manchester has added live audio monitoring to it's CA monitor. Here are some details about how the underlying service is setup
The audio monitoring is provided via an Icecast2 - darkice (server - client) set up.
to install the Icecast2 server on RHEL 6:
* install the dependencies
yum install curl-devel libtheora-devel libvorbis-devel libxslt-devel speex-devel
* install the EPEL packages
rpm \-ivh [http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm]
* yum install icecast
* configure the config file at /etc/icecast.xml
* service icecast start
On the client: compile darkice from source. [https://code.google.com/p/darkice/] (for pulse audio support). current version 1.2:
* mkdir \~/darkice && cd \~/darkice
* wget [https://darkice.googlecode.com/files/darkice-1.2.tar.gz]
* tar \-xvzf darkice-1.2.tar.gz
* cd darkice-1.2
* apt-get install build-essential libsamplerate0-dev libpulse-dev libaudio-dev lame libjack-jackd2-dev libasound2-dev libtwolame-dev libfaad-dev libflac-dev libmp4v2-dev libshout3-dev libmp3lame-dev
* ./configure \--prefix=/usr/ \--sysconfdir=/usr/share/doc/darkice/examples \--with-alsa-prefix=/usr/lib/i386-linux-gnu \--with-samplerate-prefix=/usr/lib/i386-linux-gnu \--with-jack-prefix=/usr/lib/i386-linux-gnu \--with-lame-prefix=/usr/lib/i386-linux-gnu \--with-pulseaudio-prefix=/usr/lib/i386-linux-gnu \-with-vorbis-prefix=/usr/lib/i386-linux-gnu
* make
* make install
* touch /etc/darkice.cfg
* edit darkice.cfg example \[\[ darkice.cfg \]\]
* crontab \-e
\#start darkice (init.d script is broken)
\*/1 * * * * /usr/bin/darkice \-v 10 \-c /etc/darkice.cfg
...