VirtualDJ 2021 uses advanced technology and the power of today's computers to instantly separate any song, during the mix, in real-time. Allowing DJs to adjust on the fly the components of their tracks (vocals, instruments, kicks, hi hats, etc) to create new mash-ups, remixes and transitions. This opens the door to whole new ways of mixing that were simply not possible before, and will forever change the way DJs mix.
With more and more DJ's streaming their sets live, and FaceBook not being the best for this, due to copyright complaints, Mixcloud has now started allowing pro account holders, to stream audio and video. To start with your are going to need a MixCloud Pro Subscription ($15/monthly) to be able to broadcast live on Mixcloud.
Update for the Denon MC4000 interface, this is only a small update, no major code changes have been made, and it applies to the pads only. The pad button border will now change colour, to the color assigned within the editor. This is more of a visual aid, everything else remains the same. If you prefer the current pad button, with just a small circle displaying the colour, then you have no need to update.
Using shaders in the video output is a nice way to play audio tracks when you may not have a video available for that particular track, or to lay it over top of a video that may have some questionable content that may not be suitable for your audience. Shaders are often used during live streams to make you stand out from the crowd.