Multiroom Audio: Setup Snapscast Client Synchronous Audio Receiver

Snapserver is a nice way to sync media playback across a place. Homeassistant Integration possible –> I recommend installing the Snapserver into Home Assistant (Music Assistant).

Check it out: GitHub - snapcast/snapcast: Synchronous multiroom audio player

Install:

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apt search snapcast
Sorting... Done
Full Text Search... Done
snapclient/noble 0.27.0+dfsg-1build2 amd64
  Snapcast client
snapserver/noble 0.27.0+dfsg-1build2 amd64
  Snapcast server

We just want the client, so install it:

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sudo apt install snapclient

Add this config:

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vim /etc/default/snapclient
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SNAPCLIENT_OPTS="--host <ip> --port 1704 --player alsa --device hw:0,0 --latency 200"

But keep in mind to configure your own hw-output device and IP adress of your snapserver.

Enable now:

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sudo systemctl enable --now snapclient
sudo systemctl status snapclient

Turn on sound:

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alsamixer

Extra:

I am running snapcast-client in a Proxmox LXC Container, so I needed to passthrough the AUX Output Hardware Device. I did this with this config (might not work for you!!)

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lxc.cgroup2.devices.allow: c 116:* rwm
lxc.cgroup2.devices.allow: c 226:* rwm
lxc.mount.entry: /dev/snd dev/snd none bind,optional,create=dir
lxc.mount.entry: /dev/dri dev/dri none bind,optional,create=dir
lxc.mount.entry: /dev/seq dev/seq none bind,optional,create=file
lxc.mount.entry: /dev/timer dev/timer none bind,optional,create=file

Full config: cat /etc/pve/lxc/102.conf

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arch: amd64
cores: 1
hostname: snapcast
memory: 512
net0: name=eth0,bridge=vmbr0,firewall=1,gw=192.168.0.1,hwaddr=BC:24:11:C0:DA:A1,ip=192.168.0.102/24,type=veth
onboot: 1
ostype: debian
rootfs: local-lvm:vm-102-disk-0,size=4G
swap: 1024
lxc.cgroup2.devices.allow: c 116:* rwm
lxc.cgroup2.devices.allow: c 226:* rwm
lxc.mount.entry: /dev/snd dev/snd none bind,optional,create=dir
lxc.mount.entry: /dev/dri dev/dri none bind,optional,create=dir
lxc.mount.entry: /dev/seq dev/seq none bind,optional,create=file
lxc.mount.entry: /dev/timer dev/timer none bind,optional,create=file