Get a song datas and put it in a share button

<ul id="audio-player-playlist">    
<li class="playlist_item" data-song_title="title" data-song_artwork="" data-song_file="http://ift.tt/1BdHmGZ" data-song_artist="Artist"></li>
<li class="playlist_item" data-song_title="title" data-song_artwork="" data-song_file="http://ift.tt/1BdHmGZ" data-song_artist="Artist"></li>
<li class="playlist_item current" data-song_title="title" data-song_artwork="" data-song_file="http://ift.tt/1BdHmGZ" data-song_artist="Artist"></li>
</ul>

This is the list generated by my audio player. When i click play, the "playlist_item_current" class is added to the song that's playing.

The thing is i want the users the be able to share the song playing. But how can i get the current song's data and put it in my share button?

Thanks