Web Audio Library
An AudioContext in a cross-origin iframe must be created or resumed from a user gesture to enable audio output.
playSequence
functionalityHas an option to play the sequence with an interval now. http://www.waudjs.com/api/classes/Waud.html#method_playSequence
Waud.playSequence
helper functionWaud.playSequence(["beep.mp3", "bell.mp3", "glass.mp3"]);