Build a lightweight local music player with queue-first playback, album, genre, and filesystem views, editable artwork and metadata, and shareable visual themes. Start with Android, where most signals originated, and use a free core product with optional low-cost theme packs and advanced library-personalization features.

Streaming-centric products increasingly neglect people who maintain downloaded libraries, while current requests show continued interest in offline ownership and personalization. Mature playback libraries make a focused first product technically achievable, although willingness to pay remains unproven.