Hi Michele,
You are correct, Pulse Audio isn't included in the Ubuntu image.
Once I installed Pulse Audio into RAM from Synaptic, there was still no
audio from Firefox. When I exited Kmix and re-launched it, Pulse Audio
wasn't even listed as an option for it.
Hi Edward,
usually after restarting kmix, you should have two mixer to choose from, alsa and PA.
Are you sure PA is running?
Cheers
Michele