Clipchamp Youtube Video Editor - Create YouTube videos for your YouTube channel with intros, outros and titles with Clipchamp's free online video editor. No skills needed.
Linux Show Player - Sound player designed for stage productions
Sound Byte - Sound Byte is a computerized cart rack machine for the Windows and Macintosh - play mp3, WAVE, AIFF, and other sound files at the click of a mouse
QLab - QLab, Live show control for Mac OS X.
Soundplant - Play sound files with the computer keyboard
Cue Player - Cue Player software for theater sound and lighting