addMarker(name, start, duration, volume, loop)
Adds a marker into the current Sound. A marker is represented by a unique key and a start time and duration.This allows you to bundle multiple sounds together into a single audio file and use markers to jump between them for playback.
Parameters
Name Type Argument Default Description name string A unique name for this marker, i.e. 'explosion', 'gunshot', etc. start number The start point of this marker in the audio file, given in sec