My royalty free music collections are licensed to one end-user only (the person, or company who purchased the collection). Therefore if you’re a freelance video editor who’s bought a royalty-free collection, this music is licensed only to you for use in your own projects.
If you work for many different clients and want to use the music in each of their projects, each client would need to buy their own copy of a collection in order to use the music in their video. You can play the music privately to a client to audition it for a project, but if they would like to use that track, your client would need to buy their own copy.
I’m happy to arrange a discount if you have an ongoing client base and want to buy repeat collections for each new client to use.