Once you've found the video you want to play, you have a few ways to begin watching to them in the Player. Clicking the video and then clicking the play button will play it.
Alternatively, you can drag videos into the playlist. The video will begin to play automatically, and you can add additional videos to the playlist. The Player will continue playing the videos in the list until you've seen them all. Once you have a playlist playing, you can shuffle, repeat, stop, pause, and skip videos and songs in the list.

