http://bugs.winehq.org/show_bug.cgi?id=28905
Bug #: 28905 Summary: DeusEx: Invisible War npc voices not played Product: Wine Version: 1.3.31 Platform: x86-64 OS/Version: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: directx-dsound AssignedTo: wine-bugs@winehq.org ReportedBy: haleykd@users.sf.net Classification: Unclassified
This is a long standing bug mentioned on the appdb page that was apparently never filed.
The voices not being played are overheard conversations and responses when they have no conversation options. These voices provide atmosphere, clues, and help locate npc's you're trying to avoid. All other sounds appear to play including the voices in cut scenes.
Currently the only fix is to use the native dsound.dll from windows. However this has the problem of noise in the audio which appears to be related to environmental effects since the intensity changes depending upon which environ you're currentyy in.