Hi, Dear JonatanFB!!! Thanks for your beautiful posting. i have special skills for audio and maps. Your project is very snap for me.I am a full-time freelancer who has rich experiences in developing android app. i have been understand what you want and i can do it wonderfully. if you check me, i don't want more money. i want only good feedback. please touch me. I will wait for your good response. thanks. Your developer, trustman.