I can't imagine this hasn't been a topic, but I searched and didn't see anything, so here goes......has anyone attempted adding a headphone jack? Yes, I'm aware of the warranty issues and such (not my first rodeo). I imagine there isn't a lot of room inside the case, but even a pigtail to an external jack for a simple headphone? I'm aware of the Bluetooth options and all, just wondering about this. Thanks for any feedback.