Does anyone know of a good source for custom sound effects for the iPhone UI? Preferably something with a preview feature. I have some pretty good sounds now but I've had them for a long time and I'm looking for some fresh stuff. Really would like some new lock and unlock sound effects. Ultimately, I may just have to make them myself. Would be kinda cook to set up a repository for sound effects that everyone could contribute to and use...unless it already exists? Thanks!