To start the video, Click the Start Show button in the bottom left of the screen.
To expand for full screen hit the two opposing arrows at the bottom right hand side of the video.
To escape the full screen mode, click the same arrows at the bottom right hand side of the video or hit (ESC) on the top left-hand corner of your keyboard.
To control the audio, there is a speaker icon to the left of the full screen button. Click on it, then click and drag to adjust sound.
To adjust screen quality, to the left of the speaker button there are 4 small bars that allow you to choose the quality of the feed.
If you reverse the video to re-watch a part of the concert and want to get back to the live feed. There is a Live button on the bottom left-hand side of the video. Just click it once and you will be brought back to the live feed.