Quoting Chris Cannam <cannam(a)all-day-breakfast.com>om>:
A LADSPA
plugin for timestretching would be nice, too...
Not possible -- a LADSPA plugin must always output the same number of
samples
as it receives. To slow audio down in a plugin would require an ever
increasing buffer of incoming, un-slowed input; to speed it up would
require
bending the laws of physics.
A pitch bending plugin would be much appreciated though!
Sampo