If you organize your music in folders rather than letting an app index a "library", mpz is for you. It's a free, open-source, native C++ / Qt 6 music player for large local collections — a Foobar2000-style folder workflow for Linux and Windows (no macOS package yet — I don't own Apple hardware; volunteers welcome). The focus is simple: play music from your local files. No library indexing step — just folders, and playlists you build from them by middle-clicking.
The 3-column UI shows the directory tree (aka library), the list of playlists, and tracks from the selected playlist. Middle-click on a folder in the directory view and it becomes a playlist; its contents load into the tracks view. Create multiple playlists from folders in your library and switch between them quickly. Similar to "Album list" in Foobar2000.
