Third sibling to wave/clip-wizard. Waveform scrub player, 1-5 star ratings, freeform notes, and timestamped comments (saved beside each track as <track>.juke.json). Loads a folder, an .m3u/.m3u8 playlist, or a pop-library.json. pop/bin/pop-library.mjs indexes the canonical /pop tracks with status (from RELEASES.md), backend/lane, last-updated, git revisions, duration, size, bpm/key + release links — shown per track with a status- colored meta line and a release link button. Own illy + light/dark dock icons; teal/gold/coral palette; a seamless Seedance video backdrop of the mascot; fluid proportional layout; keyboard control (space/arrows/1-5/C). Quiet auto-pop watcher (--watch) never steals focus.