The interface in 5KPlayer was designed so that all its functions are available to users from a single window. That way, you'll be able to access any of them without the need to open or close any other windows. Also, its features are varied and can handle: video, DVD, music, radio, YouTube, and AirPlay. This last feature only works when you've got a device connected to your machine and it'll only play a multimedia element that's stored on your memory or on your other machine.
Not only that, but with 5KPlayer, you'll be able to create your own multimedia library so you can play anything without the need to have it connected to your desktop. So, when you save any movies, series, family content, songs, or YouTube videos, among other options, you'll automatically find them available on your 5KPlayer library.