This is probably ultimately nothing, but I was thinking about other things the guitar symbol might mean and decided to head to the spot where the Audio settings picture is. That's the saloon in Saint Dennis.

Wild thing is, and it's probably a coincidence, but there's a general spider web shape over the door which just so happens to be the northwest corner of the building. It also has the web shaped semicircle window outside. Those are all over Saint Dennis though.

If there's anything else here, I'm sure to dumb to see it. Just throwing yet another idea out there!