I don't think there is a battle I'm in anymore where I don't get confused as to where a particular attack is coming from, and this is at least partially due to the fact that I can't tell from what direction the sound is coming from. (Being the size of a house can do that to you.)
Last night, a guild member got killed on Elnath because I couldn't find her. It turned out she was battling three mobs directly beneath my left wing, but because I have no directional sound I spun and went the wrong way, and didn't recover before it was too late.
This is really beginning to get to me.