I brought my car into service for this issue today, and I forgot to mention to them to listen for it without music, so they did not hear it. They told me to pick up the car and do a bug report if it happened again. As I got in my car to drive home, the noise started up again and I brought the service adviser out and she was able to hear it as well. She drove it around to the back garage, and after she pulled in, the noise stopped and the technician was not able to hear the noise. Apparently there is a service bulletin for this issue and the fix is NOT a replacement of the speaker (I don't know the exact fix), however they would not fix it if the technician themselves do not hear the noise. I find this silly because the service adviser clearly heard it and they still will not fix it unless the technician can replicate it. I'm leaving my car there for another day, however I don't have high hopes.