That's how this place goes, if you want to use someone else intellectual property you have to get permission first. General clips aren't usually an issue of around 10 seconds or less, but when it's larger than that it's a problem. This track specifically is considered ambient music. Not sure who nancy drew is but most likely she goes through the right channels before publishing anything with music or copyright material. Also if you get a partnership they generally have access taken care of with some copyright material, media library's and so forth.