A is a package format used by the PlayStation 3 to install applications, games, and updates. In the homebrew community, a "Spotify PKG" refers to a standalone installer that allows users with Custom Firmware (CFW) or PS3HEN to manually install the app without needing the PlayStation Store. How to Install Spotify via PKG (For Modded Consoles)
Note: There are plugins for Plex that attempt to connect to Spotify/Tidal, but setting them up requires intermediate technical knowledge. ps3 spotify pkg