3d sound on moving objects. [closed]

Question

I'm working on a project in Unity 4 in which I need to fire missile projectiles that emit a sound as they travel. Currently my Sound Manager calls PostEvent() each time the missile fires, passing the missile GameObject as the second paramater, and while this will play the sound it doesn't seem to have any positional data. In Wwise the PlayMissile_FX is set to be a 3D sound, and if I don't give it any attenuation curve the sound plays as if it's 2D, at full volume for it's duration. If I do give it an attenuation it isn't audible at all, no matter what curve distances I give it. Is there som additional setup required to have a sound follow an object in Unity through script?