Whats my options for av input on the headunit? I would like to hook up a tv tuner to it. I've seen some videos on YouTube showing fully integrated controls with the rns 510. This was done in an European VW so I know it can be done. I'm just not sure how make this happen. If I could get it to work like this one in the video that would be awesome. http://www.youtube.com/watch?v=_fsnd-h_DBc&feature=youtube_gdata_player Has anyone seen anything for tv tuner settings with the VAGCOM?