| 30 | * The pause button should always be active except for when the media is stopped. |
| 31 | * The stop button should be active only when the media is playing. |
| 32 | * The start button should be active only when the media is stopped. |
| 33 | * Clicking the start button when the media is stopped will start the playback. |
| 34 | * Clicking the stop button when the media is started will stop the playback and set the time of media to the beginning. |
| 35 | * Clicking the pause button will pause the media. One should click the same button to resume the media. |