http://bugs.winehq.org/show_bug.cgi?id=27895
--- Comment #78 from ax 34noff otaku@rambler.ru --- Probably a workaround: You can play a game without "Complete loss" of sound if you do it not too fast. So (as i understand) game loads sounds from HDD not slower than it plays them so there's no buffer underflow. Tested with Portal 2.