Hi,
I was wondering if there is software that can be used to do complicated stretching operations on audio. For example, I've got videos from VHS source which I want to overdub, however the VHs audio is stretched to different degrees throughout so I can't simply overdub it. I want to stretch the new audio so it fits roughly around the original.

If that doesn't make any sense imagine this -
I've synchronised the beginning of the files using multi-track software and stretched the new audio so it's also synchronised at the end. However, it's not synchronised in the middle!
This is my situation, does anyone know a way around this?
Thanks
Jon.