N Music Beo 4 BR1 Masterlink Problem

I have three rooms connected by Masterlink including a Beosound 5 and Beosound 3000. One room has an active kit. I can select N. Music or N. Radio with both the Beo 4 and the BR1. The second room has a BV10. Again, I can select N. Radio or N. Music with both the Beo 4 and the BR1. The third room is the problem. In that room I have a BV7. Using the Beo 4 all works as it should. I can select N. Radio or N. Music. The problem occurs if I use the BR1. It works fine for selecting N. Radio, but if I try to select N Music, the display on the BV7 changes to N. Music but it continues to play N. Radio. Any thoughts?

Thanks!

Hello 

I am very excited if an expert could give a hint; me too have the same issue that sometimes source can not be changed from n music to n radio or vice versa I do not have any clue what goes wrong 

best regards elmar