Hernandez, Teresa, and Mike Katz. Stage Managing Co-Curricular Theater at MIT. Cambridge, MA: MIT Theater, 2006. (PDF - 2.5MB)
Audacity Tutorial - Free sound editing software for Mac, PC, or Linux
QLab Help - Sound playback for Mac
Sections 6.04-6.07 in Williams, Bill. "Lighting Mechanics." Chapter 6 in Stage Lighting Design 101. Winnipeg, Canada: Bill Williams and Associates, 2007.