OK!! Solved the problem!!
Connected the Jabra headset as usual by adding a bluetooth unit. (First time of course)
The problem was that even if Zorin shows it as connected and marked as output source there was no sound.....
If i then choose internal speakers as output and direct switch back to Jabra as output it magicly starts playing!!
So i would say, some kind of bug when Zorin automaticly switches output......