* Update ambience mod

- Add musics and sounds from original mod wich was removed by MFF
  - Add musics from mpd mod
  This ambience mod add /volume command that display a form to change musics and ambience volume. This is player independant.
* Remove soundset and music mod
* Fix warning caused by undefined global variable in kpgmobs/wolf.lua

worlds/minetestforfun/world.mt

@@ -220,9 +220,7 @@ load_mod_time_regulation = true
 load_mod_h2omes = true
 load_mod_player_physics = true
 
-load_mod_soundset = true
 load_mod_ambience = true
-load_mod_music = true
 
 load_mod_areas = true
 load_mod_markers = true