🚀 go-pugleaf

I have use this code below to play MP3 files provided by one of the
user here:

#include <dshow.h>

    IGraphBuilder *Graph = NULL;
    IMediaControl *Control = NULL;
    IMediaSeeking *Seeker = NULL

    __fastcall TForm1::TForm1(TComponent *Owner)
        : TForm(Owner)
    {
        ::CoInitialize(NULL);
        if( SUCCEEDED(::CoCreateInstance(CLSID_FilterGraph, NULL,
CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (LPVOID*)&Graph)) )
        {
            Graph->QueryInterface(IID_IMediaControl,
(LPVOID*)&Control);
            Graph->QueryInterface(IID_IMediaSeeking, (LPVOID*)&Seeker);
        }
    }

    __fastcall TForm1::~TForm1()
    {
        if( Seeker )
            Seeker->Release();

        if( Control )
        {
            Control->Stop();
            Control->Release();
        }

        if( Graph )
            Graph->Release();

        ::CoUninitialize();
    }

    void __fastcall TForm1::OpenFileButtonClick(TObject *Sender)
    {
        if( Graph && Control )
        {
            if( OpenDialog1->Execute() )
            {
                Control->Stop();
                RemoveFilters();
                Graph->RenderFile(WideString(OpenDialog1->FileName),
NULL);
            }
        }
    }

    void __fastcall TForm1::PlayFileButtonClick(TObject *Sender)
    {
        if( Control && Seeker )
        {
            REFERENCE_TIME rt = 0;
            if( SUCCEEDED(Seeker->SetPositions(&rt,
AM_SEEKING_AbsolutePositioning, NULL, AM_SEEKING_NoPositioning)) )
                Control->Run();
        }
    }

    void __fastcall TForm1::RemoveFilters()
    {
        IEnumFilters* pEnumFilters = NULL;
        IBaseFilter* pFilter = NULL;
        IEnumPins* pEnumPins = NULL;
        IPin* pPin = NULL;
        IPin* pOtherPin = NULL;

        if( SUCCEEDED(Graph->EnumFilters(&pEnumFilters)) )
        {
            while( pEnumFilters->Next(1, &pFilter, NULL) == S_OK )
            {
                if( SUCCEEDED(pFilter->EnumPins(&pEnumPins)) )
                {
                    while( pEnumPins->Next(1, &pPin, NULL) == S_OK )
                    {
                        if( pPin->ConnectedTo(&pOtherPin) == S_OK )
                        {
                            Graph->Disconnect(pPin);
                            Graph->Disconnect(pOtherPin);
                            pOtherPin->Release();
                        }
                        pPin->Release();
                    }
                    pEnumPins->Release();
                }
                Graph->RemoveFilter(pFilter);
                pFilter->Release();
                pEnumFilters->Reset();
            }
            pEnumFilters->Release();
        }
    }

but i found out that some of my mp3 files cannot be played but can be
played on WMP. Anyone has some ideas what is going on? Using WinXP SP2
Directx 9.0c. thx.