Polyphonic Plug-In
The Polyphonic plug-in is a general, all-purpose algorithm that is effective with a wide range of material. For complex loops and multi-instrument mixes, use the Polyphonic plug-in. The Polyphonic plug-in supports clip-based pitch shifting.

The Polyphonic plug-in is the default plug-in for previewing and importing from Workspace browsers or the Clips List.
Elastic Audio plug-in: Polyphonic