If you are a subscribed iPhone Developer, you know what to do.
If you're not, download and install the SDK from developer.apple.com (free download, it's the actual developer certificates that cost money), then follow the instructions at :
http://blog.paulbetts.org/index.php/2008/07/22/running-your-iphone-sdk-app-on-iphone-without-the-app-store/

Patches should be stored in iPhone Resources/patches


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Thanks to James McCartney, for making this great piece of audio
software publicly and freely available.