The Polar Jukebox System (PJS) is a set of curses and console applications that allow you to manage huge amounts of MP3 files. It stores all information in a PostgreSQL database for fast and reliable operating. The tools include jplay (a Pine-like player with playlists and many sophisticated features), jrec (an audio CD to PJS converter), jfunc (commandline options for the PJS), jget (ssh-based tools for transfering CDs between PJSes), jdel, jimport, jexport, and more.