Today there's this very cool but weird version of You're Everywhere on in the Hip player.. What happened to it..?? It's not only slower, something's done with GD's voice. Very recommendable to listen to it though! I love it.

To me, it sounds pretty obvious that the track was slowed down in Sound Forge or some such audio editing tool.
But that more than likely means that it wasn't. It just sounds that way. I personally think it's inferior to versions played at its normal tempo.
"Ballroom" as I know it sounds terrible in comparison to how it usually is live. There's no energy and thats what this song is all about. Downie sounds beat, as In new orleans is......
Peace