gooD softwaRE FOR COMPILATIONS?

[SILHUETTE]

HI, MY DEAR BJöRKOHOLICS!
I WANNA MAKE SOME BJöRK COMPILATIONS AND I WOULD REALLY LOVE TO KNOW WHICH SOFTWARE (BOTH PAID AND UNPAID) DO YOU USE FOR ADJUSTING VOLUME LEVELS. I READ THAT IT IS THE BEST TO DO IT FOR YOURSELF, BUT YOU KNOW, THAT WOULD COST A LOT OF TIME....
THANK YOU IN ADVANCE FOR YOUR SUGGESTIONS!