Music Background is not working in Scorm Cloud

See my suggestions below

1. O̶n̶ ̶F̶i̶l̶e̶ ̶P̶u̶b̶l̶i̶s̶h̶ ̶O̶u̶t̶p̶u̶t̶ ̶s̶t̶o̶r̶y̶_̶h̶t̶m̶l̶5̶:̶ ̶a̶d̶d̶i̶n̶g̶ ̶t̶h̶i̶s̶ ̶c̶o̶d̶e̶ ̶ ̶ ̶<̶a̶u̶d̶i̶o̶ ̶s̶r̶c̶=̶"̶y̶o̶u̶r̶ ̶a̶u̶d̶i̶o̶ ̶f̶i̶l̶e̶ ̶n̶a̶m̶e̶.̶m̶p̶3̶"̶ ̶i̶d̶=̶"̶b̶g̶S̶o̶n̶g̶"̶ ̶p̶r̶e̶l̶o̶a̶d̶=̶"̶a̶u̶t̶o̶"̶ ̶a̶u̶t̶o̶p̶l̶a̶y̶ ̶l̶o̶o̶p̶>̶<̶/̶a̶u̶d̶i̶o̶>̶
Don't manually add the code... let Javascript add it for you.  Add a trigger to execute JavaScript at Timeline start and use the following code:

//create a function to add the music elements dynamically into the head of the html document
function add_line() {
var line = document.createElement("audio");
var head=document.getElementsByTagName('body')[0];
line.type = "audio/mp3";
line.src="";
line.id="bgSong" ;
line.autoplay = true;
line.loop = true;
head.appendChild(line);
}

//run the function only if the added html lines have not already been added
if(document.getElementById('bgSong')==null){
add_line();
var audio = document.getElementById('bgSong');
audio.volume = 0.5;
}

2. On Storyline Trigger--> Execute javascript when time line start:
var audio = document.getElementById('bgSong');
audio.src="1.mp3"; // be sure you are including the FULL URL or RELATIVE path to where the music is located

audio.load();
audio.play();