idinesh

Ok guys so this is my first post to the forum and I need to ask a question! Ok so my previous navi unit was a kenwood, and now when im on a route and the lady TTS speaks to me telling me where to go, the music playing fades from the front speakers to the back ones and the TTS voice plays on the front speakers... I cant seem to find an answer to this, but does anyone know if this is possible on the f700bt ? thanks a bunch!