All Ampify Sounds are royalty free and you can release tracks with our sounds for commercial purposes. However you cannot make the samples available individually. For example, you're not allowed to upload a track that contains just one drum loop, but you are allowed to upload a track that contains a drum loop and a guitar loop.
Please read our sound pack licence information for more on this.
However, the licence agreement is different for Ninja Tune Artist series sound packs. You cannot sell or make available for public download, purchase or streaming any tracks made using the the Ninja Tune artist series sound packs (please see our FAQ article on this for more info).