WOW! A stop button! Fantastic. Seriously, it's just what I need. Also, I'm going to run your app. It looks - from a swift skim of the manual - excellent.
One typo on page 9 of 'manual 0.8.pdf' 'Tune controlls 3' should be 'Tune Controls 3.' But then you knew that. ;)
Thanks a lot for the info...