Boom is a volume booster app for your Mac and music
Boom is a simple volume booster that lets you boost the volume of your Mac and your music files.
Using Boom is simple. You know the ways to change the volume of your Mac. Boom provides the same easy access to boost sound.
From the videos on YouTube, Hulu, your favorite music playing on iTunes, to voice applications like Skype, iChat and your favorite Games, Boom can boost them all. Add to that the ability to boost audio files, you have a booming addition to your Mac.