Simple Radio Station App

I need a straightforward Android/IOS app that does just two things: 1. Automatically start and keep playing our existing online radio stream (I will supply the full URL). Alsow play on airplay/sonos and stays open all the time! Alsow when the device is locked... (Budget: €30 - €250 EUR, Jobs: Android, API Integration, App Design, App Development, App Publication, iPhone, Mobile App Development, Objective C)