$ sudo apt-get update
$ sudo apt-get install libsnack-alsa 

libsnack-alsa is installed in your system.

Make ensure the libsnack-alsa package were installed using the commands given below,

$ sudo dpkg-query -l | grep libsnack-alsa *

You will get with libsnack-alsa package name, version, architecture and description in a table

libsnack-alsa package basic information: