$ sudo apt-get update
$ sudo apt-get install libalsaplayer0 

libalsaplayer0 is installed in your system.

Make ensure the libalsaplayer0 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libalsaplayer0 *

You will get with libalsaplayer0 package name, version, architecture and description in a table

libalsaplayer0 package basic information: