pa_volume is a simple tool to set the remembered volume level of pulseaudio clients. It requires module-stream-restore to be loaded (which is usually the case) to function. When called without arguments it shows all the known clients (running and non-running) and their remembered volume level. To set the volume level pass it the name of the client followed by the volume in percent.
No configure script is provided right now, but there is a simple Makefile. You will need to have pkg-config and the development packages for libpulse installed. On Debian/Ubuntu based distributions this is the pkg-config and libpulse-dev packages.
sudo apt-get install pkg-config libpulse-dev
git clone https://github.com/rhaas80/pa_volume.git
cd pa_volume/
make
pa_volume paplay 50.1
will set the volume of paplay to 50.1%.
pa_volume
will list all known clients and their rememebered volume level for each channel.
pa_volume paplay toggle
will toggle mute for paplay