Do I need to have a license before releasing my song on Soundcloud/Youtube etc.? Yes. As soon as your song with samples from Tracklib tracks leaves the studio, you need a sample license. Related articles Can I use several samples in my song? What's the difference between different categories? Can you help us with a sample license for a song that is not in your catalog? I just got a sample license - what do I need to do? Do I need to have a license for each track of a song?