iTunes missing plugin - speed control

[Les Posen]

For all its simplicity and breadth of features, iTunes is missing one 
element that would make it perfect - pitch/tempo/speed control.

Winamp has this. Anybody aware of any way to afford such a feature in 
iTunes? I could always wait in hope that someone will write a hack for 
the iPod (since the Creative Zen has this feature) and that would solve 
half my problem, but a more effective solution would be for it to be on 
iTunes for "on the fly" shifts.


Les