I've uploaded the RTE audio of the few minutes after the Georgia goal. Have a listen.
http://www.zshare.net/audio/55620069d7c194dd/
Most of the crowd join in with a couple of the usual chants but it was the SS that got those chants going. Then listen exactly 2 minutes in. It's silence. That's the silence (with the exception of groans and shouts) we would have got for 70 minutes if it wasn't for us. 15-20 seconds later and you can hear the fields of athenry. It's not very loud but it's positive noise.
Chants can be heard all throughout the game on the RTE coverage so maybe many those at home just weren't listening for it. Maybe a few hundred people singing just goes over the head but whether they realise it or not it does make a difference.
I just find it frustrating that I have the match here on my PC and I can hear us singing all throughout the game yet I go into work on Thursday and I get a bit of friendly stick because nobody heard anything of a singing section.