ID3_TAG_BYTES
m_spIO->Seek(-ID3_TAG_BYTES, FILE_END);
m_nTagBytes += ID3_TAG_BYTES;
ZeroMemory(pID3Tag, ID3_TAG_BYTES);
if (m_spIO->GetSize() > ID3_TAG_BYTES)
m_spIO->Seek(-ID3_TAG_BYTES, FILE_END);
m_spIO->Seek(-ID3_TAG_BYTES, FILE_END);