Thanks for the response. Number 3 has something to do with DVC. While I was playing a song, I went into Settings=>Audio=>DVC and while I was sitting on this page the beep kept happening about every 1 second. It's got something to do with the interaction between this and the 'Disable absolute volume' option in 'Developer Options' in android. I got it to stop, but I'm not sure exactly which setting did it. Right now I have 'disable absolute volume' set to 'on' and 'no dvc for bluetooth absolute volume' also set to 'on'. There is a note under this option that says 'the volume is constantly changed on this page' which would explain why it was beeping every second or so. It seems like it is pegging the 'max' volume over and over which is causing the beep. I don't know if this is something that can be fixed but I just wanted to document it.