From Extentia Information Technology:
iAudioBox is a simple and versatile iPhone/iPod Touch application that comes with several built in sound effects and the ability to record and playback additional custom sounds. The built in sound effects are useful and commonly required for pranks, in theatre, the workplace (!) and to entertain friends. Use the ability to record and playback your own sound effects to expand the built in collection and get what you need done.
iAudioBox Lite comes with 27 built in sound effects and the ability to record and playback 3 custom sounds. iAudioBox Pro (yet to be released) will have far more sound effects of a higher quality, will have the sound effects categorized and will include the ability to record and playback a larger number of custom sound effects of a longer duration.
iAudioBox's simple and easily accessed user interface is designed for single handed use without fumbling and struggling!