function FlashAudioSoundInstance(src, startTime, duration, playbackResource) {
		this.AbstractSoundInstance_constructor(src, startTime, duration, playbackResource);


// Public Properties
		/**
		 * ID used to facilitate communication with flash.
		 * Not doc'd because this should not be altered externally
		 * #property flashId
		 * @type {String}
		 */
		this.flashId = null; // To communicate with Flash

		if(s._flash == null) { s._instances.push(this); }
	}
FlashAudioSoundInstance extends the base api of {{#crossLink "AbstractSoundInstance"}}{{/crossLink}} and is used by
{{#crossLink "FlashAudioPlugin"}}{{/crossLink}}.

NOTE audio control is shuttled to a flash player instance via the flash reference.

@param {String} src The path to and file name of the sound.
@param {Number} startTime Audio sprite property used to apply an offset, in milliseconds.
@param {Number} duration Audio sprite property used to set the time the clip plays for, in milliseconds.
@param {Object} playbackResource Any resource needed by plugin to support audio playback.
@class FlashAudioSoundInstance
@extends AbstractSoundInstance
@constructor