Audio pages don't need min-height

as Popular Audio's moved horizontal

### Before

![screen shot 2014-09-23 at 12 28 40](https://cloud.githubusercontent.com/assets/74132/4371245/e13f9494-4314-11e4-82ae-f1ab0913883a.png)

### After

![screen shot 2014-09-23 at 12 28 44](https://cloud.githubusercontent.com/assets/74132/4371248/e8a9fdf0-4314-11e4-9fc6-f6536ac9b285.png)