I'm working on an audio looper that will stretch based on BPM changes detected by Ableton Link. Not sure if this is remotely the best way to go about things but the project I'm using this in is quite noisy and therefore what might be unacceptable to some might be exciting to us, and perhaps you as well.
Astute readers of this forum may detect that I have lifted solutions from this thread: https://forum.pdpatchrepo.info/topic/6403/timestretch-abstractions
This is a proof of concept for now and I will update as things get more ironed out. Enjoy!