(function(){

	//var SOUND_URL = "http://hifi-content.s3.amazonaws.com/caitlyn/production/pizzaTurntable/newBuiltMixl.wav";
	var loopTime = -1; // Loop for how long?  -1 is always on.
	var soundURL = null;//SoundCache.getSound(SOUND_URL);
	var lastSoundURL = null;
	var receiverName = "";
	var soundLoop = null;
	var soundLocal = null;
	var soundVolume = null;
	var soundFollowsPlayer = null;
	var refreshInterval = null;
	var stopDistance = null; // how far away from the listener until it stops the sound?
	var soundData = null;
	var injector = null;
	var entityID = null;
	var properties = null;	
	var playPos = null;
	var playerEmitterDistance = null;
	var stopSound = false;
	
	this.preload = function(pEntityID) {
		
        entityID = pEntityID;        
		var intervalID = Script.setInterval(function() {	
		
			properties = Entities.getEntityProperties(entityID, ["position", "userData"]); 
			 if (!properties.userData) {				 
                   print("Sound emitter "+entityID+" missing user data."); 
				   return;
                 } try {
                    soundData = JSON.parse(properties.userData); 
					soundURL = SoundCache.getSound(soundData.soundURL);
					receiverName = soundData.receiverName;
					soundVolume = !isNaN(soundData.soundVolume) ? Number(soundData.soundVolume) : 0.0;
					soundLoop = soundData.isLoop;
					soundFollowsPlayer = soundData.isFollowPlayer;
					soundLocal = soundData.isLocal;
					playPos = soundFollowsPlayer ? MyAvatar.position : properties.position;
					playerEmitterDistance = Vec3.distance(MyAvatar.position, properties.position);		
					refreshInterval =  !isNaN(soundData.refreshInterval) ? Number(soundData.refreshInterval) : 5000.0;
					refreshInterval = Math.min(1000, Math.max(refreshInterval, 10)); // cap updates at min 10 ms	
					
					if (injector && soundFollowsPlayer && (playerEmitterDistance>stopDistance)) {
						
							injector.stop();
							injector = null;
							stopSound = true;
							refreshInterval = 5000;
							
					} else stopSound = false;	
					
                } catch (e){}			
				
			if (!stopSound){
				
				if (!injector) {
					if (soundURL.downloaded) {					
						injector = Audio.playSound(soundURL, {
							position: playPos,
							volume: soundVolume,
							loop: true,//soundLoop,
							localOnly: true//;//soundLocal
						});
					}
					lastSoundURL = soundData.soundURL;
				} else {
					if (lastSoundURL != soundData.soundURL) {
						injector.stop();
						injector = null;
						soundURL = SoundCache.getSound(lastSoundURL);
					} else {
					injector.setOptions({
						position: playPos,
						volume: soundVolume
					});
				}
				}
			}
		}, refreshInterval);
	};
	
	this.unload = function(){
		if (injector) {
			injector.stop();
			injector = null;
		}
	};
	
});