How can you forget to turn off the radio when you hear music ?! If you turn it off manually a few times, it becomes a normal/automatic thing to do (just like locking your car or putting on your seatbelt...)
Lol bcoz i have a bad habit of turning the volume right down when crap music comes on the radio.Its true what u said though after afew times turning off it will become normal, na lets stick with automatic coz im far from normal