cerdtsePlayer.js

var ids = ['26052399', '26035461', '26035459', '26035454', '26035467']
var links = Array.prototype.slice.call(document.getElementsByClassName('song_button'), 0).filter(a => ids.find(id => id === a.dataset.playSong))
var current = 0;
setInterval(
    () => {
        var hasPlaying = links.map(a => a.classList.contains('playing')).filter(a => a).length;
        if (hasPlaying) {
            console.log('skip')
            return;
        } else {
            console.log('next')
            current = current > links.length - 1 ? 0 : current;
            links[current].click();
            current++;
            return;
        }
    }, 
    1000
)