It could be done, but I would not recommend it. I would suggest a dedicated GPS from Garmin that has an MP3 player, that is if you mean by music player. If you mean streaming audio, then perhaps a smartphone that has an OEM windshield mount might be in order. I am particularly partial to Garmin maps, but I do have TomTom on my Nexus 7. I do have the ASUS dock and that is why I would not recommend it for what you are thinking about. If you really want a good mount for the Nexus 7, I would keep searching. There must be something that is good quality out there. Maybe if you search here it has already been posted.