APE_INFO_FRAME_BYTES
int nTotalBytes = (GetInfo(APE_INFO_FRAME_BYTES, nStartFrame) * (m_nStartBlock % nBlocksPerFrame)) / nBlocksPerFrame;
nTotalBytes += (GetInfo(APE_INFO_FRAME_BYTES, nFinishFrame) * (m_nFinishBlock % nBlocksPerFrame)) / nBlocksPerFrame;
nTotalBytes += GetInfo(APE_INFO_FRAME_BYTES, nFrame);
int nFrameBytes = GetInfo(APE_INFO_FRAME_BYTES, nFrame);
case APE_INFO_FRAME_BYTES: