I am using Navigon program as my in-car navigation system. I plug phone audio out into AUX input in the car. Previously I have been using it on iphone and the program uses a nice media player (internal to iOS I guess) *inside* the program. So, when there is an announcement coming from GPS software it mutes the music player, which is very nice. Now, I have moved to Android and keep using Navigon. The problem is that there is no internal player options. So when I am playing music while using driving with Navigon, two channels: audio from Navigon and music get simply mixed, and it is nearly impossible to understand the gps directions. I was wondering what knowledgeable folks here would recommend to solve this problem? For instance, is there any way to set audio levels separately for the stream coming out from Navigon and from music player. Thanks a lot!