Style native audio controls

### Before

![photo 1](https://cloud.githubusercontent.com/assets/74132/3843422/1223a856-1e40-11e4-92d3-d1730610aafa.PNG)

### After

![photo 2](https://cloud.githubusercontent.com/assets/74132/3843425/167718b6-1e40-11e4-8c1c-88cbc4dd7c41.PNG)