$ sudo apt-get update
$ sudo apt-get install osspd-pulseaudio 

osspd-pulseaudio is installed in your system.

Make ensure the osspd-pulseaudio package were installed using the commands given below,

$ sudo dpkg-query -l | grep osspd-pulseaudio *

You will get with osspd-pulseaudio package name, version, architecture and description in a table

osspd-pulseaudio package basic information: