I have been wanting this for a while. The only areas that have background noises are the forests, swamps and mountains. The forests and swamps both have good background noises, and the mountain noise works for the lower areas, but doesn't really work in the snow areas.

Somewhat understandably, the caves and dungeon areas are silent. Unfortunately, so are the haunted forests, deserts, oceans, islands, jungles...

So yeah, I'd love to see music and at least some sound affects where appropriate. :/