Add playable videos to multimedia container

![screen shot 2014-08-08 at 15 59 04](https://cloud.githubusercontent.com/assets/1001642/3858318/a3e44814-1f0c-11e4-81f2-42d5da5616e8.png)

![screen shot 2014-08-08 at 15 59 11](https://cloud.githubusercontent.com/assets/1001642/3858319/a5dc9ae0-1f0c-11e4-9b82-36e5ef45e899.png)

![screen shot 2014-08-08 at 15 59 22](https://cloud.githubusercontent.com/assets/1001642/3858323/a8cc0736-1f0c-11e4-9534-9dc495cf33eb.png)