Shaul
I'm currently using the original CircularBuffer for one of my projects. Since it seemed to be "mostly dead" I searched for a follow-up and found this. Good work! I wonder...
Not sure whet I did. I attach a screenshot and a link to the dump file: https://www.dropbox.com/s/0g50m9t1pswld7y/UCR.7z?dl=0 
Please look at this picture:  I did not find it intuitive that buttons 1 and 3 correspond to axis Y and that 2 and 4 to X.
Even when SPP is asleep. This is because it still holds an open audio stream: 