41 	Audio("[extent]"), ref(obj)  in AudioExtent()
43 	ref->Reference();		// reference audio object  in AudioExtent()
52 	ref->Dereference();		// clear audio object reference  in ~AudioExtent()
59 	return (ref);  in GetRef()
67 	if (ref == r)			// object is not changing  in SetRef()
69 	ref->Dereference();		// dereference previous object  in SetRef()
71 		ref = r;  in SetRef()
72 		ref->Reference();	// reference new object  in SetRef()
105 	return (ref->GetLength());  in GetEnd()
117 		len = ref->GetLength();  in SetEnd()
143 	return (ref->GetName());  in GetName()
150 	return (ref->GetDHeader(ReadPosition() + start));  in GetHeader()
158 	return (ref->GetDHeader(pos + start));  in GetHeader()
218 	err = ref->ReadData(buf, len, newpos);  in ReadData()