All of the products we sell can be used in your releases without paying any additional royalties, per our End User License Agreement.
You can use our loops to create, produce, and release your own productions without paying Big Fish Audio any royalties. Our products are "license free" or "royalty free" because you buy the license to use our products when you buy that specific product. The only thing you are not able to make with our products is a sample library like the ones we sell. You can't resell, loan, or rent any of the Big Fish products you have purchased.