Title says it
Here's the stack trace:
6/5/2010 7:07:32 PM (3.1.6.2)
-----------------------------------CurrentDomain_UnhandledException-----------------------------------SlimDX.DirectSound.DirectSoundException: Unknown: n/a (-2004287465)
at SlimDX.Result.Throw[T](Object dataKey, Object dataValue)
at SlimDX.Result.Record[T](Int32 hr, Boolean failed, Object dataKey, Object dataValue)
at SlimDX.DirectSound.SoundBuffer.Play(Int32 priority, PlayFlags flags)
at AIWar.GameMusic.DataTransferActivity() in C:\vcprojs\AIWar\DX\GameMusic.cs:line 215
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
6/5/2010 7:07:35 PM (3.1.6.2)
-----------------------------------Application_ThreadException-----------------------------------SlimDX.DirectSound.DirectSoundException: Unknown: n/a (-2004287465)
at SlimDX.Result.Throw[T](Object dataKey, Object dataValue)
at SlimDX.Result.Record[T](Int32 hr, Boolean failed, Object dataKey, Object dataValue)
at SlimDX.DirectSound.SoundBuffer.Play(Int32 priority, PlayFlags flags)
at AIWar.GameSound.Play(SoundType Type) in C:\vcprojs\AIWar\DX\GameSound.cs:line 97
at AIWar.GameSoundGroup.Play(SoundType Type) in C:\vcprojs\AIWar\DX\GameSoundGroup.cs:line 145
at AIWar.Game.PlaySound(String Filename, SoundType Type) in C:\vcprojs\AIWar\GameFormParts\Startup.cs:line 2875
at AIWar.Windows.StartGame.btnCheckForUpdates_Click(Object sender, EventArgs e) in C:\vcprojs\AIWar\Windows\StartGame.cs:line 236
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Label.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
6/5/2010 7:54:58 PM (3.1.6.4)
-----------------------------------CurrentDomain_UnhandledException-----------------------------------SlimDX.DirectSound.DirectSoundException: Unknown: n/a (-2004287465)
at SlimDX.Result.Throw[T](Object dataKey, Object dataValue)
at SlimDX.Result.Record[T](Int32 hr, Boolean failed, Object dataKey, Object dataValue)
at SlimDX.DirectSound.SoundBuffer.Play(Int32 priority, PlayFlags flags)
at AIWar.GameMusic.DataTransferActivity() in C:\vcprojs\AIWar\DX\GameMusic.cs:line 215
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()