[Wine] New Vegas Steam version on Ubuntu 10.10 no dialog.

[Mobidoy]

I have installed Fallout New Vegas under Ubuntu 10.10 and every thing went well but, when I start the game, I dont have any sound in-game, maybe it is only dialog but I cant say... I get sound up until I pick New game in the menu but, I have it also in the intro movie but, when I get to the point where Doc say "Good, you're Awake", Nada, no sound... 

What should I try ? 

Wine 1.3.13
Fallout New Vegas Steam fully updated
Ubuntu 10.10 fully updated