It's already a standalone jack-app and it is hard
to wrap it into a
plugin because it changes the duration of the sound: i.e. you feed it
with 1 second of audio and it returns 10 seconds.
I suppose you could do some tricks or require constraints.. The
file-reader and playback code is nicely separated from the engine in
paulstretch's code. YMMV
I meand - move only that blur module, not entire tool
))). As for stretch module - it is nice candidate for audacity modules (i'm not sure,
is there any open standard for non-linear audio plugins).