With my old iPhone 4 I really enjoyed the Navigon app, it was almost perfect with google local search and the abbility to play instructions while you were playing music and to pause and play music. Unfortunately the app was completely ruined for me with the release of iOS 5 which made it impossible for apps to have independent volume control. The problem with this was that NAVIGON's voice was designed to be as loud as humanly possible, I plug my iphone into my car while driving and play music and also pump the navigation instructions over the radio while the music is in the background. Because I could no longer adjust the volume of the voice independently of the volume of the music, the music would always be playing at normal volume while the instructions played at an ear piercing monstrously annoying volume that would utterly freak out all my passengers and was nothing short of scarry. I have without even trying subconciously avoided using the app a single time since the release of iOS 5. I have an iPhone 4S and like all the iOS options but it essentially bricked the NAV app for me. Is there an alternative that lets you play navigation instructions and music at the same time without ear piercingly unbearable volume levels on the instructions? Is there any jailbroken app that lets me return the old iOS independent volume functionality or a hack I can do either?