Kasette is a 100% offline, client-side music player. Import audio files from your device, and everything else happens locally: no accounts, no servers, no analytics, no network access at all. Features: * Import local audio files (MP3, FLAC, M4A, OGG, Opus, WAV, AAC) * Client-side ID3/FLAC tag and embedded cover art parsing * Playlists, including an automatic "Imported songs" playlist * Background playback with lock-screen/notification controls * Search across title, artist, and album * Light and dark themes, with accent color and background options * English and Spanish (Latin American), switchable in Settings * Export or restore your whole library as a single backup file, to any folder, an SD card, or a USB drive * Installable as a Progressive Web App, and available as this native Android build There are no accounts, no cloud sync, and nothing ever leaves your device.