it's skinned and it allows you to double click the button in order to do common actions, like double click select to select all, and double click remove to remove selected, double clicking file allows you to add a file, and double clicking list allows you to quickly load a playlist. I have attached another image.
In WACUP it's not obvious that you can double click, and the new menu does not support skins.
I am aware that you can, double click, it just does not feel as responsive/nice, at least to me.
I just think it should be toggle able as opposed to unchangeable.