Core Audio SDK missing from XCode 4?

Just installed XCode 4 for Lion and I'm not seeing the ability to create an Audio Unit in the startup wizard. There's nothing to do with Core Audio available on the developer downloads page.

Sorry not sure what you're suggesting I do here?
I've just moved my /Developer directory out of the way and re-run "Install Xcode.app", and I'm still not able to choose Audio Unit in the startup wizard.
I can choose Image Unit, but that's no good to me
Thanks

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