Create a local-first library vault that imports playlist and saved-library metadata from supported streaming services, records periodic snapshots, detects missing or unavailable tracks, and prepares repaired playlists for export. Begin with a paid library rescue and migration service, using a lightweight desktop utility where account access or local processing is required, then productize the repeatable import, comparison, matching, and export workflow.

Multiple competing services are receiving similar complaints about disappearing libraries, unreliable downloads, unwanted queue behavior, and poor playlist navigation. Consumers increasingly maintain years of saved music, making continuity and portability more valuable while dissatisfaction creates switching intent.