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Multiple definition problems

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Hi fellows. I'm using directX with Dev-C++ 4.9.9.2. I want to play mp3 files but I have these problems:
  multiple definition of `IID_IMediaEvent' 
  first defined here 
  multiple definition of `IID_IMediaControl' 
  first defined here 
  multiple definition of `CLSID_FilterGraph' 
  first defined here 
  multiple definition of `CLSID_FilgraphManager' 
  first defined here 

The definitions of the IID_IMediaEvent and IID_IMediaControl are in the control.h of DirectX. The CLSID_FilterGraph and CLSID_FilterGraphManager are in the uuids.h If I comment the lines that cause this problem I obtain these problems:
59 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `IID_IMediaControl' undeclared (first use this function) 
60 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `IID_IMediaEvent' undeclared (first use this function) 
50 C:\Documents and Settings\Alex\Desktop\DirectSound\DirectMain.cpp `CLSID_FilterGraph' undeclared (first use this function) 

What I want to know is: Is there another place when this definitions are defined beyond these headers? I'm searching in another DirectX headers and I not found anything. Can anyone helps? Below the beginning of my code. Thanks a lot for the support:
#define INITGUID
#include <dmusici.h>
#include <dsound.h>
#include <dshow.h>
#include <iostream>

IGraphBuilder*             g_pMediaGraph    = NULL;
IMediaControl*             g_pMediaControl  = NULL;
IMediaEvent*               g_pMediaEvent    = NULL;

LRESULT CALLBACK WindowProcedure(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE h1, HINSTANCE h2, LPSTR lp, int iShow)
{
   HWND       hwnd;
   HDC        hdc;
   MSG        msg;
   bool bQuit = false;
   WNDCLASSEX wnd;
   wnd.cbSize        = sizeof(WNDCLASSEX);
   wnd.style         = CS_OWNDC;
   wnd.cbClsExtra    = 0;
   wnd.cbWndExtra    = 0;
   wnd.hInstance     = h1;
   wnd.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
   wnd.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
   wnd.hCursor       = LoadCursor(NULL, IDC_ARROW);
   wnd.lpszMenuName  = NULL;
   wnd.lpszClassName = "hwnd";
   wnd.lpfnWndProc   = WindowProcedure;
   wnd.hbrBackground = CreateSolidBrush(RGB(128,128,128));
   if(!RegisterClassEx(&wnd))
   {
      MessageBox(0,"não registrou","",0);
   }
   hwnd = CreateWindowEx(0, "hwnd", "lalala", WS_POPUP, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), HWND_DESKTOP, NULL, h1, NULL);
   ShowWindow(hwnd, 1);
   CoInitialize(NULL);
   HRESULT hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, IID_IGraphBuilder, (void**)&g_pMediaGraph);
   //if(hr != S_OK)
   //{
   //   MessageBox(0,"","caralho",MB_OKCANCEL);
   //}
   WCHAR wstrFileName[MAX_PATH+1] = L"C:/Documents and Settings/Alex/My Documents/2_Shaaman-Shaman-Angra-Reason-More.mp3";
   g_pMediaGraph->QueryInterface(IID_IMediaControl, (void**)&g_pMediaControl); 
   g_pMediaGraph->QueryInterface(IID_IMediaEvent, (void**)&g_pMediaEvent);
   g_pMediaGraph->RenderFile(wstrFileName, NULL);
   while(!bQuit)
   {
      if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
      {
         if(msg.message == WM_QUIT)
         {
            bQuit = true;
         }
         else
         {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
         }
      }
   }
}

LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
   switch(msg)
   {
      case WM_KEYDOWN:
      {
         switch(wParam)
         {
            case VK_ESCAPE:
            {
               g_pMediaControl->Release();
               g_pMediaGraph->Release();
               CoUninitialize();
               PostQuitMessage(0);
               break;
            }
         }
         break;
      }
      case WM_CHAR:
      {
         switch(wParam)
         {
            case 'x':
            {
               g_pMediaControl->Stop();
               break;
            }
            case 'z':
            {
               g_pMediaControl->Run();
            }
         }
         break;
      }
      default:
      return DefWindowProc(hwnd, msg, wParam, lParam);
   }
}

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If you use INITGUID to define the GUIDs for a DirectX program you should only #define it in one source file. Alternately you can leave off the INITGUID define and just link against the dxguid.lib file.

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