installing SID (Unstable) debian packages (Pulseaudio)

[Nachteule]

Probably not, you'll get a lot of missing dependencies. Use jessie-backport repo instead, it has pulseaudio 7.1

https://packages.debian.org/jessie-backports/pulseaudio

So you have to add jessie-backport to file /etc/apt/sources.list

Terminal

root@xbian ~ # cat /etc/apt/sources.list
deb http://http.debian.net/debian jessie main non-free
deb http://http.debian.net/debian jessie-backports main non-free
root@xbian ~ # apt-cache policy pulseaudio
pulseaudio:
Installed: (none)
Candidate: 5.0-13
Version table:
7.1-2~bpo8+1 0
100 http://http.debian.net/debian/ jessie-backports/main armhf Packages
5.0-13 0
500 http://http.debian.net/debian/ jessie/main armhf Packages