To redistribute your reflector content to icecast, you'll need to set up loopback sound interfaces.

The following file will be used to create 3 loopback interfaces at boot time.

It shall be placed in /etc/modprobe.d/:

aloop.conf

options snd-aloop enable=1,1,1 index=10,11,12

Then run the following command:

echo "snd-aloop" >> /etc/modules

The code above takes care of boot time configuration. To add the interfaces without rebooting, run the following:

(lsmod | grep snd_aloop) && modprobe -r snd_aloop
modprobe snd-aloop enable=1,1,1 index=10,11,12

You need to adjust the enable and index parameters to insert additional interfaces.

Install icecast2 from repository.

Below, you'll find the configuration file to install in /etc/icecast2/ after having changed the passwords.

icecast2.xml

<icecast>
    <location>Region Auvergne-Rhone-Alpes</location>
    <admin>icemaster@localhost</admin>
    <limits>
        <clients>100</clients>
        <sources>10</sources>
        <queue-size>524288</queue-size>
        <client-timeout>30</client-timeout>
        <header-timeout>15</header-timeout>
        <source-timeout>10</source-timeout>
        <burst-on-connect>1</burst-on-connect>
        <burst-size>65535</burst-size>
    </limits>
 
    <authentication>
        <source-password>CHANGEME</source-password>
        <relay-password>CHANGEME</relay-password>
        <admin-user>admin</admin-user>
        <admin-password>CHANGEME</admin-password>
    </authentication>
    <hostname>icecast.ham42.net</hostname>
 
    <listen-socket>
        <port>5299</port>
    </listen-socket>
 
    <listen-socket>
        <port>8080</port>
    </listen-socket>
 
    <http-headers>
        <header name="Access-Control-Allow-Origin" value="*" />
    </http-headers>
 
    <fileserve>1</fileserve>
 
    <paths>
 
        <basedir>/usr/share/icecast2</basedir>
        <logdir>/var/log/icecast2</logdir>
        <webroot>/usr/share/icecast2/web</webroot>
        <adminroot>/usr/share/icecast2/admin</adminroot>
 
        <alias source="/" destination="/status.xsl" />
    </paths>
 
    <logging>
        <accesslog>access.log</accesslog>
        <errorlog>error.log</errorlog>
 
        <loglevel>3</loglevel> 
        <logsize>10000</logsize> 
    </logging>
 
    <security>
        <chroot>0</chroot>
    </security>
</icecast>

svxreflector.conf

###################################################################
#
# Configuration file for the SvxReflector SvxLink conference node
#
###################################################################
 
[GLOBAL]
#CFG_DIR=svxreflector.d
TIMESTAMP_FORMAT="%Y-%m-%dT%H:%M:%S%z"
LISTEN_PORT=5300
#SQL_TIMEOUT=600
#SQL_TIMEOUT_BLOCKTIME=60
CODECS=OPUS
 
[USERS]
#F4ZXX-1=MyPass
 
[PASSWORDS]
DefaultPassword="Change this key now."

svxlink.conf

###############################################################################
#                                                                             #
#                Configuration file for the SvxLink server                    #
#                                                                             #
###############################################################################
 
[GLOBAL]
LOGICS=SimplexLogic,ReflectorLogic
CFG_DIR=svxlink.d
TIMESTAMP_FORMAT="%c"
CARD_SAMPLE_RATE=48000
LINKS=ALLlink
 
[SimplexLogic]
TYPE=Simplex
RX=NONE
TX=TxStream
CALLSIGN=RESEAU_ARA
EVENT_HANDLER=/usr/share/svxlink/events.tcl
DEFAULT_LANG=en_US
 
[ReflectorLogic]
TYPE=Reflector
HOST=127.0.0.1
PORT=5310
CALLSIGN="RESEAU_xxx"
AUTH_KEY="Default community password"
AUDIO_CODEC=OPUS
#JITTER_BUFFER_DELAY=0
#DEFAULT_TG=999
#MONITOR_TGS=999
#TG_SELECT_TIMEOUT=30
#ANNOUNCE_REMOTE_MIN_INTERVAL=300
EVENT_HANDLER=/usr/share/svxlink/events.tcl
 
[ALLlink]
CONNECT_LOGICS=SimplexLogic:94:SK3AB,ReflectorLogic
DEFAULT_ACTIVE=1
TIMEOUT=0
 
[TxStream]
TYPE=Local
AUDIO_DEV=alsa:hw:1,0
AUDIO_CHANNEL=0
PTT_TYPE=NONE
TIMEOUT=7200
TX_DELAY=0
PREEMPHASIS=0

darkice.conf

[general]
duration        = 0        # duration of encoding, in seconds. 0 means forever
bufferSecs      = 1         # size of internal slip buffer, in seconds
reconnect       = yes       # reconnect to the server(s) if disconnected
realtime        = no
rtpio           = 3
 
 
[input]
device          = hw:10,1
sampleRate      = 48000     # sample rate in Hz. try 11025, 22050 or 44100
bitsPerSample   = 16        # bits per sample. try 16
channel         = 2         # channels. 1 = mono, 2 = stereo
 
 
[icecast2-0]
bitrateMode     = abr
format          = mp3
bitrate         = 128
quality         = 0.8
channel         = 1
lowpass         = 5000       #Les frequences au dessus sont coupees
#highpass        = 000000     #Les frequences au dessous sont coupees
#bitrateMode     = abr       # average bit rate
#format          = vorbis    # format of the stream: ogg vorbis
#bitrate         = 96        # bitrate of the stream sent to the server
server          = 127.0.0.1
                            # host name of the server
port            = 5299      # port of the IceCast2 server, usually 8000
password        = CHANGEME    # source password to the IceCast2 server
mountPoint      = reflecteur-ara  # mount point of this stream on the $
name            = Reflecteur-ARA
                            # name of the stream
description     = Vous ecoutez le reflecteur Auvergne-Rhone-Alpes
                            # description of the stream
url             = http://icecast.ham42.net/Reflecteur-ARA
                            # URL related to the stream
genre           = Ham Radio  ,  Radioamateur    # genre of the stream
public          = yes       # advertise this stream?