For a little workaround that seems to be working, I installed "PulseAudio Preferences" in the Software Center and then from within the app:
check: Multicast/RTP->Enable Multicast/RTP reciever
check: Multicast/RTP->Enable Multicast/RTP sender
select: Send audio from local microphone
check: Loop back audio to local speakers
Still seems to be an issue in 13.04 :(
For a little workaround that seems to be working, I installed "PulseAudio Preferences" in the Software Center and then from within the app:
check: Multicast/ RTP->Enable Multicast/RTP reciever RTP->Enable Multicast/RTP sender
check: Multicast/
select: Send audio from local microphone
check: Loop back audio to local speakers
Hope this helps someone else.