Fixed it!
Over the last couple of weeks I have been wrestling with the Audio set up on my ubuntu PC. Could I get more than one app to play sound at the same time? Nope.
But tonight I finally got the Pulse Audio server up and running as it should be. The next question is, why doesn’t the installer (synaptic) configure this for me!!!
Who would have thought I would have got excited over an email notification while Songbird was playing Led Zeppelin?