Join my \"waiting for a lot of AU\'s club\" I\'ll waive the initiation fee as you are a Northern member but yearly dues are $999 , just about about the cost of buying a unit of ewql... hmmmm.... interesting, no?
Melodyne? I don\'t know if it does exactly what you need , but man o man, is it a wicked piece of software. If you haven\'t already go and listen to the demos. Unbelievable.
As long as the VST\'s are OS X compatible the VST to AU Adapter by FXpansion works great. I have all the ones I need running on X in Logic 6.2.1 including PSP Vintage Warmer (don\'t pass this one up.) and the Blue Tubes by Nomad Factory.
Angus is a great guy and updates often to snag VST\'s that might not work. And he is working on a VSTi Rewire host to run VSTi synths with Pro Tools, www.fxpansion.com