Ready? Let the Movie Begin
To open your video file, click in the Apple menu on "File", and then on the menu item "Open...". The app support the most multimedia files such as .avi, .H264, .mp4, .mkv, .webm, .mov, .m4v, .mpeg, .wmv.
Also you can open your favorite YouTube video direct from the web to the Aurora Player app with the second menu item.