SatNav app with Audio Book app

I'm trying to find a satellite navigation app that works with an audiobook app such that I can listen to the audio book while navigating. When I get a navigation instruction I want the audio book to pause, then resume where it left off. Google navigation just mutes every audio book player I've found (doesn't pause/resume), NDrive (preferred) just plays over the top of the audio book. I've tried AudioBook player 2 (free) and MortPlayer (Audio Book). Ideally I'd like to continue to use NDrive and find an audiobook player that works with it, but if that's not possible any combination of navigation / audiobook player would do. In case it matters I'm in the UK and am using an HTC Wildfire (i.e. small screen resolution).