A very nice remote control (not in flash!) appears when we click on a song with the possibility of chosing between PLAY, SHARE, RATE, ADD TO PLAYLIST
We can use this kind of interface for other subject. It like a right click with customized options.
When we click on “add to list” the screen divides in 2 and the play list appears and instead of “add to list” option when we click on a song of the play list there is the “remove” option