File System Browser
This browser lets you view songs based on the folder they’re in. It can play and edit songs inside and outside of your song library, and adds an item to the context menu to add the selected songs to your library. If you try to add songs to a playlist or the play queue that aren’t in your library, they will be added automatically to it.
Since ratings and play counts are usually stored in the library rather than the song, play counts and ratings will only be saved if you add the song to your library!