如何在jQuery中实现可排序的播放列表

I am making a simple music playing online app. I would like to make a song playlist, and I would like the songs in the playlist to be sortable. I plan to use the jQuery "sortable" plugin. However, I would like to keep track of what order the songs are in, so that when one song finishes, I know which song to start next. Instead of creating an event handler to be executed when the user changes the order of the songs, and actually keeping track of what order songs are in, my current solution is simply this:I am making a simple music playing online app.