Can press 'a' through ';' on a qwerty keyboard and play back tones at different rates.  With the mouse can draw the waveform that is then repeated a number of times to be played by the keypresses.
Drawing the mouse interface area and the live waveforms more separately. TBD going to add a key to box filter the current buffer.
filter with b key, TBD automatically record when b is pressed
drawing the fft properly, filtering with 'b' a little smoother
make solid waveforms instead of lines