I thought you had an IR eye connected.I have successfully tried that setup. However, I understand from setting BS9000 in A.Option 0, this also disables the IR transceiver.
Actually I can change the CD playing, but I have to see if I use the Beoliving app or the B&o app. One or both have the option to choose the number 1 to 6 to play the correspondent CD.The issue is that controlling the BS9000 from the B&O App provides only a very few features (for me I can only switch on/off the BS9000, select source and play/pause/skip track of a CD. I cannot even change CD).
You have to make an adjustment in the settings. Go to the setting page of your Core in the app (man icon, products, Core, Configure, Beolink, Link to other products. Make the primiere link the BLC) Then go to: Content, Sources, Local list and check all products the Core should see so also the BS9000 CD and the BLC Line in.Additionally, I attached my BG to the line-in of the BLC. I struggled from the app to select line-in source of the BLC
If you start the Core in the app you can choose the Core sources and the BLC sources as local Core sources.
Reset this - solved with the remark here above.Next, from the App Settings menu of the BLC, I changed "Products controlled by apps" to BLC with speakers (even though there are no speakers connected). Bo doing so I can now select line-in from the BCL (and sources available on the BS Core - but if I pick from a source from the Core, I can obviously not link the Core and BLC in order to play the music on the Core).
Add an IR eye to the Core and put the BS9000 back in option 0. But note: you must have the right IR settings in the BLC and than all Beo4 command will go through the Core.I have then tried to set it in A.Option 1, and by doing so I can now use my Beo4, even if there are no speakers connected to the BS9000.