'Failed to open sound stream decoder : sounds/yippee'

[MuthSera]

Or something very close to that. Whenever the game goes to play the darwinian yippie noise they make when you beat a level, it crashes darwinia.. I thought it was only with that sound, but it aparently was with more then that.. I would very much appreciate any assistance that can be given on this matter.

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DARWINIA BLACK BOX REPORT
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VERSION : win32-full-steam-1.4.2
ERROR : 'Failed to open sound stream decoder : sounds/yippee'

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====== PREFERENCES ======
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ServerAddress = 127.0.0.1
BypassNetwork = 1
IAmAServer = 1
TextLanguage = English
TextSpeed = 15
HelpEnabled = 0
SoundLibrary = dsound
SoundMixFreq = 44100
SoundMasterVolume = 255
SoundChannels = 64
SoundHW3D = 0
SoundSwapStereo = 0
SoundMemoryUsage = 1
SoundBufferSize = 512
SoundDSP = 0
ScreenWidth = 800
ScreenHeight = 600
ScreenWindowed = 0
ScreenZDepth = 24
ScreenColourDepth = 32
ScreenRefresh = 60
RenderLandscapeDetail = 1
RenderWaterDetail = 1
RenderBuildingDetail = 1
RenderEntityDetail = 1
RenderCloudDetail = 1
RenderPixelShader = 1
ControlMouseButtons = 3
ControlMethod = 1
UserProfile = MuthSera
RenderSpecialLighting = 1
BootLoader = random
ModSystemEnabled = 1
Mod = none

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====== STACKTRACE =======
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retAddress = 00421646
retAddress = 0047CDC7
retAddress = 0047CF53
retAddress = 0047EA78
retAddress = 0047EC02
retAddress = 00486086
retAddress = 004B3A78
retAddress = 004B4581
retAddress = 004262C2
retAddress = 004D2DCA
retAddress = 7C816D4F
retAddress = 00000000