Ear Candy - Ear Candy is a sound level manager that nicely fades applications in and out based on their profile...
LiveTrax - LiveTrax is an app by MasterMedia Productions through which musicians can control the playback of their favorite track during live performances by using simple controls.
EarTrumpet - Volume Control for Windows
Go Button - Go Button is a mobile audio app designed to provide professional playback of music and sound effects for live shows. It provides a creative, self-contained show control system that runs on your iPad, iPhone, or iPod touch.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.