It's not a bug. It's not a technical problem. It's nothing.

So, i'll make a SUGGESTION!

I have a bluetooth headset and my fc uses mumble. If i start mumble then the game, game crashes. Is i start the game then mumble, it kills the sound.

The only way i got it to work is to set the default playback device to "communication" instead of "stereo playback". Sound is terrible but it works.

Might i add terrible is not good enough?

Suggestion is this, i can pick my display adapter in ff14 options, why can't i pick my audio device in ff14 options? Too hard for SE?

Weak.