What does ‘Listener Slots’ mean?
Slots are the maximum number of concurrent (at the same time) listeners you can have.
When a listener connects to your stream they use “1 slot” and when they disconnect that slot becomes available again.
Even the most widely accessed online radio stations may get 100,000 listeners per month, but that only equates to a few thousand *concurrent* streams.
Play what you like to the world!