Are you talking about your copyright policy from a company standpoint, or a creator standpoint? If it's from a business standpoint, that would really be better off talked to with a lawyer considering copyright is a very tricky topic sometimes.
If you're talking from a creator standpoint where you don't mind people using your content. You have the option to set your content to creative commons. That's a universally understood creative way of saying "do what you want with my content"
Just keep in mind, if you're using any part of other people's content in your own content, especially drum loops or samples, you can't always give out full consent to use your content.
BUT if you are USING other people's content and simply saying "this content doesn't belong to me" generally publishers don't accept that as a reasonable excuse to use their content, but everyone treats their own ownership differantly.