FILE_CURRENT
m_pIO->Seek(pInfo->spAPEDescriptor->nDescriptorBytes - nBytesRead, FILE_CURRENT);
m_pIO->Seek(pInfo->spAPEDescriptor->nHeaderBytes - nBytesRead, FILE_CURRENT);
#ifndef FILE_CURRENT
m_spIO->Seek(RIFFChunkHeader.nChunkBytes, FILE_CURRENT);
m_spIO->Seek(nWAVFormatHeaderExtra, FILE_CURRENT);
m_spIO->Seek(RIFFChunkHeader.nChunkBytes, FILE_CURRENT);