iPhone Dictaphone

I need an iPhone developer very familier with AVFoundation and lower level Audio on the iPhone. I will provide a sample front end UI for a dictaphone that has the following functioning buttons: -Play, Record, Stop, Rewind (with audio feedback), FastForward (playing audio),GotoEnd, GotoBegining. -Recording position editor for Insert, Overwrite, Append -slider indicator and counter for position in recording -I will also want a visual level indicator for audio. A linear bar graph showing audio levels (as in iMovie) would be preferred to aid in localizing editing insertion points. -I need advice on the preferred audio format(s) (AAC, MP3, IMA4...). My goal is reduced file size to allow emailing for transcription. The files will need encryption. Emailing and Multi-file handling is not needed - I will take care of that. The best overall comparable example is a free download - Pocket Dictate, by NCH Sound. There are many features on that program that I don't need, but the basic recording/editing features are what I require. Thank you.