Power Auras can use sounds when an ability is ready for example, it will start to play a sound.
This is an example for Kill Command (hunter ability), it will play the ready check sound when is ready to use, you have enough focus (resource).
Kill Command – Power Auras with sound, when the ability is ready:
Version:4.21; anim1:3; icon:Ability_Hunter_KillCommand; buffname:Kill Command; begin:2; x:-146; bufftype:7; owntex:true; speed:2; sound:10; combat:true; size:0.16; y:-95; texmode:2; anim2:2; finish:3
Import the settings by writing /powa in game.
This is another Power Auras setup for Kill Command, this time is to display the cooldown left:
Version:4.21; b:0.8784; g:0.8784; target:true; icon:Ability_Hunter_KillCommand; buffname:Kill Command; r:0.8784; x:-194; isAlive:0; unitn:Only for raid/group.; bufftype:7; alpha:1; owntex:true; inVehicle:0; stacksOperator:=; PowerType:0; size:0.16; y:-95; texmode:2; ismounted:0; timer.h:1.4; timer.Texture:Monofonto; timer.enabled:true; timer.Relative:CENTER
They should be displayed next to each other.
You can use any spells you like by changing the name of the ability, for example: Deep Freeze instead of Kill Command.
You can even assign your own created sound by converting an mp3 file into .ogg (the audio format for Power Auras). There are many free software that can convert the files.
After you got the .ogg file, just copy it into the Power Auras folder where the other audio files are located.
The ready check sound isn’t that bad for noticing your most used ability/spell.