MusicPlay Player doesn't work

You have to upload some audios in album posttype and use that album id in theme options/player options/Album ID. Have a look at the screenshot.

Find for this code in style.css file on line around 509

#featured_slider {
    position: relative;
    padding: 0;
    background-color: rgb(255, 255, 255);
    background-color: rgba(255, 255, 255, 1);
    z-index: 9;
}

and do comment the background-color,

#featured_slider {
    position: relative;
    padding: 0;
   /* background-color: rgb(255, 255, 255); */
   /* background-color: rgba(255, 255, 255, 1); */
   z-index: 9;
}