Livetraker Audio Midi Player - LiveTraker is a audio / midi / text player specifically designed for live performance on stage
QLab - QLab, Live show control for Mac OS X.
Jingle Palette - Jingle Palette application was designed to be an instant jingle player for radio broadcast studios.
Cue Player - Cue Player software for theater sound and lighting
MadMapper - The Mapping Software
Soundplant - Play sound files with the computer keyboard