http://bugs.winehq.org/show_bug.cgi?id=31684
--- Comment #11 from Andrew Eikum aeikum@codeweavers.com 2012-09-18 07:38:44 CDT --- I checked through how local_buffer is used and didn't find any obvious problems with it. So it's probably a memory corruption bug, as comment 2 suggests. Could you attach another log with the channels from http://wiki.winehq.org/Sound?