op.dwCallback=NULL;

	op.lpstrAlias=NULL;

	op.lpstrDeviceType=_T("MPEGAudio");

	CFileDialog dlg(TRUE);

	if(IDOK==dlg.DoModal())

	{

		CString temp=dlg.GetPathName();

		temp.Replace("\\","\\\\");

		op.lpstrElementName=(LPCSTR)temp;

	}

	op.wDeviceID=0;

	if(0!=mciSendCommand(0,MCI_OPEN,MCI_OPEN_ELEMENT,(DWORD)&op))

		AfxMessageBox("打开失败！");