When playing the game, usually in a Dungeon or a Flying Fortress, the game's sound will randomly kick out. It makes a sound as if my speakers were turned off (A loud thump), and when I go into the menu it gets recovered. When I leave the menu, it gets lost again. Usually, saving and then loading that save will fix this issue, but sometimes a full restart of the game is required.

My Sound Card is a HTO Striker 7.1, I have the most recent drivers.
DxDiag: http://www.mediafire.com/?2t1hxf9964xv511
Support Tool: http://www.mediafire.com/?e4a2tzxh7lpza8e