2011 E350 COMAND query

[disad-vantage-d]

Apologies if I'm missing something, but how do I have navigation or reversing camera operative without any audio playing? I have looked through the manual and can't seem to find an answer. Any assistance will be greatly appreciated.

[disad-vantage-d]

Thanks for your replies.

I have been utilising the first suggestion but hoped there was a more sophisticated method.

After having consulted the manual I had suspected the second, but wondered whether something had been omitted.
I had noticed the mute facility but again thought there may have been a more satisfactory method.

Mute it shall be then when reversing the car into the garage or transporting friends or relatives who don't share my eclectic tastes in music!