Ok kiddo, so you know how when you want to watch a movie or play a game you have to pay for it? Well, it's the same thing when you want to use music to DJ with your computer or other digital device.
Digital DJ licensing means that you have to get permission from the people who made the music before you can use it in your DJ mixes. This is because the people who made the music have what's called "copyright" over their work, which means they get to decide how it's used and who gets to use it.
So, to get permission to use the music in your DJ mixes, you have to get a license from the people who made the music. This usually involves paying a fee or a royalty to the people who made the music, and it's the way that they can make money from their work.
Now, there are different kinds of licenses for different kinds of music use. Some licenses might only let you use the music for personal use, like playing it at a party or sharing it with your friends. Other licenses might let you use the music for professional use, like playing it at a club or on the radio.
It's important to get the right kind of license for the music you want to use, so that you don't get in trouble for using it without permission. And that's why digital DJ licensing is so important!