Flexible ui for playlist view

- flexible ui for the playlist view (small, medium and large)
- [x] medium ui
- [x] large ui

- medium ui
![image](https://f.cloud.github.com/assets/658431/1626001/527ce12a-56da-11e3-9c88-6a1419c16ea8.png)

- large ui
![image](https://f.cloud.github.com/assets/658431/1626004/545cbb3c-56da-11e3-98d4-5e2685120259.png)