ol {
    counter-reset: li; /* Initiate a counter */
    list-style: none; /* Remove default numbering */
    *list-style: decimal; /* Keep using default numbering for IE6/7 */
    font: 15px 'trebuchet MS', 'lucida sans';
    text-shadow: 0 1px 0 rgba(255,255,255,.5);
	padding:15px 0 0 0;
}

.track-list li{
    position: relative;
    display: block;
    padding: .4em .4em .4em .8em;
    *padding: .4em;
    margin: .5em 0 15px 2.5em;
    background: #ddd;
    color: #444;
    text-decoration: none;
    transition: all .3s ease-out;   
}

.track-list li:before{
    content: counter(li);
    counter-increment: li;
    position: absolute; 
    left: -2em;
    top: 50%;
    margin-top: -1em;
    background:#ff8106;
    height: 2em;
    width: 2em;
    line-height: 2em;
    text-align: center;
    font-weight: bold;
}

.track-list li:after{
    position: absolute; 
    content: '';
    border: .5em solid transparent;
    left: 0em;
    top: 50%;border-left-color:#ff8106; 
    margin-top: -.5em;
    transition: all .3s ease-out;               
}