Hi, I´m new in the forum, thanks in advance... I have a beolik converter 1790 "A slave" conected by masterlink to BV7-40 and BS9000. I order CD source from my network Beosound Essence mkII or Beoplay M3 and works perfectly, but I can´t change the CD in the BS9000 In the Beomusic app, the button to change CD appears but it doesn't work. Allways play the cd number one. Does anyone know what can happen? Thanks