Of course this is just the sound. It misses so much: the assembled choirs; the large church completely full of people with a high degree of interconnection; the colour of the glass and the soar and sweep of limestone; the children coming and going; the clear strong voices of the young people from Selwyn and St. Hilda's; the inspired liturgical leadership of Bishop Steve.
For me, preaching is more than simply reading an essay to the people. It is a connection in which all the elements mentioned and more besides combine in an act of communication. So an audio recording can give the content but not the completeness of the sermon. You had to be there. But all that aside, here's what I had to say.