I saw a similar comment earlier, but I'm not quite sure I believe it. I've been playing about 3 days now, and frequently hear the "wind chimes" and the "buzzing clicking sound" which I think are insects. I have seen collectibles "appear" both with and without one of these sounds happening at the same time. I suspect that in the early part of the game, that collectibles are appearing so rapidly (thank goodness!) that some people are merely associating their appearance with a sound. If I am wrong, someone with "definitive" proof please correct me and tell me how to change my settings to "hear" the appropriate sound! I have: music off; voice overs about 1/2; and sounds on high. I have my monitor volume at a comfortable level.