I tag compilation tracks with original release dates, but usually I exclude compilation albums from playlists that include whole albums (If I want to listen to all of my Rush albums, I don’t include Chronicles in the list). Unless I select a compilation album deliberately, those tracks usually only get played when I’m in mode #1 (See my first post). Of course if the user has no control over the lists at all, there’s no way to know the difference between a compilation album and normal albums, so I guess it’s all a moot point.