Each license grants a specific usage scope - where and how you are allowed to use the track.
Your scope depends on the tier
The tier you buy sets what is covered, for example the type of project and how widely it is distributed. You accept the license agreement when you buy, and the exact scope is shown at purchase and written in your license document, so you can always check what you are cleared to do.
If your use grows
Tracks are cleared for the uses your license covers, so you can publish with confidence. If your use grows beyond your tier - a wider campaign, broadcast, or exclusivity - move up a tier or request a custom quote.