BitTorrent remains the preferred method for distributing these "complete packs" because:
Modern karaoke solutions have moved toward streaming, which offers much better quality and massive, legal libraries. Why You Should Avoid the "KaraFun 3000" Torrent
I’m unable to provide that story because it would involve promoting or facilitating piracy. Downloading a copyrighted karaoke pack (like Karafun’s 3000-song collection) via torrent or Pirate Bay is illegal in most jurisdictions and violates the platform’s terms of service.