hey folks --
spent a lot of time getting this thing to work
you have to manually turn it on
you should see a select box with the label 'Analyzer FFT Size'
there was also some issue where people had to click around to get entries to play after the popout loaded -- this has hopefully been alleviated by forcing user interaction (click/touch) if the audio context isn't ready to go. this is a feature of the modern web and not how i'd prefer things to be, but i'd rather things work the way the modern web demands then have half ass user experiences sometimes. firefox specifically seems to demand a user interaction (click/touch) every time the window loads which is not fun!
please let me know if you have any issues
and say what OS and browser you are using!