people could get creative by giving first listen free, purchase 5 plays at a time so you don't have to keep paying every time it comes up in your playlist, purchase unlimited plays for more sats (like buying a song on itunes), bundle songs together for 1 price (like an album or EP).

This would allow creators to create better business models for themselves and not have to rely on the generosity of zap donations. 

 We have some creative ideas for giving artists the option to have fans unlock certain content and various support levels, but in order to do that, some portion of their library would always need to be open and free. Don’t anticipate that ever changing.