[iggldiggl]

> media player

Media players are already a somewhat iffy proposition because playlists, subtitles or multi-part (video) files for example are the kind of multi-file file formats that don't work well with heavily sandboxed file access because of the implicit relationships between separate files that the OS doesn't know anything about.

[lostmsu]

Usually they can be restricted to specific folders, e.g. music, video, photos.