An audio streaming and recording SDK for iOS with support for the http and mms protocols. Plays mp3, aac, aac+ and wma audio streams. Includes documented Objective-C code of a demo XCode project, demonstrating usage.
RadioTunes SDK is capable of playing audio streams but it doesn't have rewind/forward functionality which would be nice to have for a project like yours. If you don't mind this lack of functionality, feel free to download the demo and see if it suits your needs.