It, and apps like it (plex, emby) are a fancy front end for all your pirated media or personal backups. It requires the media exist in digital form on a network

It, and apps like it (plex, emby) are a fancy front end for all your pirated media or personal backups. It requires the media exist in digital form on a network attached device, be it your PC, NAS or server. It will not interface with any legit streaming services you have like spotify, netflix, et cetera. Think of it as a personal netflix-like UI for your local media, and nothing more.