Has anybody else experienced this problem?
1. Turn on radio and adjust volume to suit.
2. Switch on Sat Nav to find out where I am supposed to be pointing my MINI.
3. The nice lady in my Sat Nav system speaks at a predetermined volume (adjusted with Menu/Settings/Sat Nav Volume).
4. Bored with radio, so I listen to an MD...but I have to turn up the volume to hear the tracks (much quieter than FM), but that isn't a problem.
5. The next set of directions from my Sat Nav are now being shouted at me (its like having my wife sat in the car with me!

).
6. So I adjust the volume knob on the radio to turn down the Sat Nav direction volume.
7. The MD starts playing again at the volume I had selected at 4, everything is OK.
8. But then the Sat Nav gives me another direction and it is shouting at me again

.
9. The only way to stop the shouting is to go into the Menu/Settings/Sat Nav Volume and make adjustments

...not recommended at 70mph on the motorway

.
10 But then, if I want to listen to my radio again, I need to turn the radio volume down, which means I cannot hear any Sat Nav directions without re-setting the Menu/Settings/Sat Nav Volume yet again.
According to the Boost MD handbook, by adjusting the radio volume knob as a Sat Nav direction is being given, the Sat Nav will assume the new volume setting until a further adjustment is made.
My system is not doing this, it reverts back the Menu/Settings/Sat Nav Volume setting.
I took it to the dealer...the technician agreed something was wrong.
The car was booked in for a software update...but that made no difference what so ever!
Does anybody have any suggested resolutions?