My project and issue/question: https://forum.ableton.com/viewtopic.php?f=35&t=192820
(So as you can see in facts it's "only" about shifting the waves in milliseconds forward or backward - but synced. The pitch shifter in the thread was just an example. The created m4l device could be "latency killer" alternative.)
Important is following:
* short fade-in / -outs between all recorded wave parts to avoid crackling noises
* a knob with values between -200ms and +200ms (with midilearn functionality)
* usable for MacOSX with Ableton 9 x86 (x64 is optional/desirable)
Payment will be through Paypal.
But first, is it possible or just a stupid idea?