The real answer is: get your own sound/mixing engineer. There's no other easy and good way. Either you should learn all these things by yourself, or go get a guy who already have sound engineering skills.
Where the supreme pleasure which is beyond senses is perceived through intelligence, having established himself there, he no longer wavers away from the Lord.
Gaining which he considers no other gain to be superior to that and abiding therein, he is not shaken even by the greatest of the sorrow.