From the analysis I heard of that audio clip, the words "yanni" and "laurel" are both there at different frequencies. People who have poor high frequency hearing tend to hear laurel. Also playing the clip on a sound system with a strong base you will tend to hear "laurel". Children who tend to have better high frequency hearing tend to hear "yanni".
I heard a story on it in the car and I heard "ganni". I haven't tried with other sound systems yet.