User Interface
I don't know if the purpose is to show videos or just the music, if its just the music, you can improve the User Interface, using symbols in place of words, for example.
The UI is very, very simple, it's all rectangles, words and squares
You can optimize the space of the interface by using small words, and all te rectangles are not necessary, use them just for guide, but the words is enough on playlist selection.
Well, you can do a lot of improvements, but the objective is very clear and it's well done.
Thank you for the fantastic idea, I can hear my favourite music style just by clicking some buttons =D
The 9 is just for the interface...