How to setup playing system audio into teamspeak

I have Fedora distro (21) running in a VirtualBox VM I want to be able to take the system's output audio and feed it into the teamspeak input (capture) The reason for this is for a game I play I want to use website soundboards to inject 'game sounds' into teamspeak. Having the ambient sounds connected as a separate user allows others to control volume etc. The VM has the audio host device set to: Null audio driver. Because I don't want the sound played on my host machine where I will also be using teamspeak. I tried add snd_aloop - but didn't know what I was doing with it and setting the teamspeak capture to the loopback seemed to do nothing Any help appreciated