Refer: https://c-nergy.be/blog/?p=13655
Open you software center and enable source code, and third party Conocial Partners
# Step 1 - Install Some PreReqs
sudo apt-get install git libpulse-dev autoconf m4 intltool build-essential dpkg-dev -y
sudo apt build-dep pulseaudio -y
# Download pulseaudio source in /tmp directory - Do not forget to enable source repositories
cd /tmp
sudo apt source pulseaudio
# Compile
pulsever=$(pulseaudio --version | awk '{print $2}')
cd /tmp/pulseaudio-$pulsever
sudo ./configure
# Create xrdp sound modules
sudo git clone https://github.com/neutrinolabs/pulseaudio-module-xrdp.git
cd pulseaudio-module-xrdp
sudo ./bootstrap
sudo ./configure PULSE_DIR="/tmp/pulseaudio-$pulsever"
sudo make
# copy files to correct location (as defined in /etc/xrdp/pulse/default.pa)
cd /tmp/pulseaudio-$pulsever/pulseaudio-module-xrdp/src/.libs
sudo install -t "/var/lib/xrdp-pulseaudio-installer" -D -m 644 *.so
reboot