JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://connect.soundcloud.com/sdk.js"></script>
<button onclick="player()">Play/Pause</button>
<ul id="demo">
</ul>

JavaScript

SC.initialize({
    client_id: "b8f06bbb8e4e9e201f9e6e46001c3acb",
});
var currentTrack = $("ul li").first().attr('id');
var playing;
var is_playing = false,
    sound;
$(document).ready(function(){

        $("ul").on('click','li',function(){
	        currentTrack = this.id;
            console.log(currentTrack);
            if(sound)
               sound.pause();
            streamTrack(currentTrack);
        });
    
});


function player(){
    
    if( sound ) {
        if(is_playing) {
            sound.pause();
            is_playing = false;
        } else {
            sound.play();
            is_playing = true;
            console.log(already_played);
        }
    } else {
        currentTrack = $("ul li").first().attr('id');
        console.log(currentTrack);
        streamTrack(currentTrack);
    }
}    
    

$.getJSON({'https://soundcloud.com/groovebeck/groovebeck-horus-original-mix-contestorion'}", function(data){
    var answer = {};

    $.each(data.PlayListArray, function(key, val){ //navigate to array called PlayListArray
        var songLink = val.URL; // the value of URL in the array
        SC.get('/resolve', { url: songLink }, function(track) {
            answer[songLink] = track;
            if(Object.keys(answer).length == data.PlayListArray.length) {
                // we've got all results: let's process them by iterating on data.PlayListArray again
                $.each(data.PlayListArray, function(key, val){
                    var track = answer[val.URL];
					var trackTitle = track.title;
                    
						$("ul").append("<li id= "+ track.id + ">" + trackTitle + "</li>");
                });
            }
        });
    });
});
var is_playing = true;
function streamTrack(myTrack){
    SC.stream("/tracks/" + myTrack, function(obj){
            //obj.stopAll();
            
            obj.play();
            sound = obj;
            is_playing = true;
    });
}