MusicFree is a plugin-based, customizable, and ad-free music player available for Android and Harmony OS. It does not integrate any music sources directly; instead, all functionalities like searching, playing, and importing playlists are enabled through plugins, allowing users to access any online music source with compatible plugins. The app supports features such as music and album searches, lyrics association, and local data storage, ensuring user privacy. It offers both light and dark themes, customizable backgrounds, and is fully open-source under the AGPL 3.0 license, emphasizing non-commercial use. Users can install plugins locally or from the web, with detailed documentation and community support available. MusicFree is designed for personal use, promoting legal and ethical music consumption.