Please please Help - PS3 Sound issue

GF finaly got interested and now wants to play. First game for her in years.
Got PS3 copy for her, installed on my old PS3 where I used to play.
Account all done, launcher working with sound, then when game starts - nothing, no sound at all.
Created character and have started playing but still no sound.
We went as far as deleting the game and Launcher and re-installing from her PS3 disk then downloading the updates again.
Same result
Game worked fine when I used it.
Help us Obi Wan, your our only hope.