Circular playlist

[heejongahn]

As soundcloud2000 dosen't support repeat on/off feature, I think it's more intuitive to make the first song of the playlist to be played when the last one is over. For now, when the last one's over, the player just repeats that particular song.

I guess we can achieve this by adding simple conditional statement (whether current one is the last song of the playlist or not) to the next_track function of player_controller.rb, but I'm not sure how to exactly achieve that. Can anyone give me little guideline or make a patch for it?