This app is a plugin. Prior to use it you should have https://f-droid.org/packages/ch.blinkenlights.android.vanilla installed. Once both player and this plugin are installed, request a context menu from library screen, select "Plugins" and "Tag Editor" afterwards. This plugin can edit metadata tags of the various music files and persist them to the file being edited. Note that not all music files support storing tags in metadata as this depends on format. Also note that artwork fetching and persisting is done in another plugin, https://f-droid.org/packages/com.kanedias.vanilla.coverfetch that is also available from store. <b>Features:</b> * Tag editing of multiple audiofile formats (mp3/ogg/flac) * Any supported tag: Title, Album, Year, Lyrics, etc. * Lightweight (640 KB in release apk)