Add audio stream to iPhone/iPad app

Creating a page-based app (with story boards) traffic app for iPhone/iPad. Would like some assistance adding: 1. A simple audio stream from the internet. Stop, play, volume control, play audio when in background, and auto-reconnect if network dropped are my requirements. Optional items: audio buffer (of maybe 30 seconds) to replay audio if needed, and audio meter for visual feedback while listening. Audio controls need to be added to both iPhone and iPad version of app. I will provide the static web address for an online audio file. 2. Add 5 pages that will have just a single live webcam on each. When switching between pages, webcam stream on previous page must stop. (Do not want all 5 webcams streaming at same time. I will add the finsihing touches. I just need the mechanics of the above items added to app.