Your system should have "Flash Player" installed to listen the songs online.Don't have Flash Player ? Download it here. To Download the song,mouse over the song you like then right click your mouse and click "Download this Song"
This is about as simple as it gets - just stare at the centre of an image and be surprised. Some of the images such as the castle require you to keep staring for at least 30 seconds, and if you think nothing's happened - as soon as it turns to colour, look to the side.