Plays a sound when the mage acquires the Missile Barrage buff.
I found it difficult to hear the soft sound that is used to currently notify you of the buff.
So, I wrote this very small add-on.
I typically use this macro for spell rotation:
/castsequence [button:1] reset=3 Arcane Barrage,Arcane Blast
/cast [button:2] Arcane Missiles
/cast [button:3] Slow