http://bugs.winehq.org/show_bug.cgi?id=16241
--- Comment #8 from Rico kgbricola@web.de 2009-01-07 12:13:51 --- Created an attachment (id=18560) --> (http://bugs.winehq.org/attachment.cgi?id=18560) regfile, which adds the missing registry keys for XAudio2_0.dll
This regfile adds the registry keys for XAudio2_0.dll, which are needed by cod5. You also have to copy the XAudio2_0.dll in the windows/system32/ directory. You could get a copy from ms (it should be in the MS DirectX 9 user redistributable).