final ByteArrayReader reader = new ByteArrayReader(file, APE_DESCRIPTOR_BYTES - 16);
header.cID = reader.readString(4, "US-ASCII");
header.nVersion = reader.readUnsignedShort();
reader.skipBytes(2);
header.nDescriptorBytes = reader.readUnsignedInt();
header.nHeaderBytes = reader.readUnsignedInt();
header.nSeekTableBytes = reader.readUnsignedInt();
header.nHeaderDataBytes = reader.readUnsignedInt();
header.nAPEFrameDataBytes = reader.readUnsignedInt();
header.nAPEFrameDataBytesHigh = reader.readUnsignedInt();
header.nTerminatingDataBytes = reader.readUnsignedInt();