Thanks for your suggestions guys, but I already have updated the mlgw software to 2.10 and I have tried to configure the BS4 in mlgw setup (and removed all my previous configurations regarding ML.
I have a BeoSound 4 as well, but I'm thinking of getting rid of that one since it is really seldom used. My thought is at least to first get the new BeoSystem4 up and running with MLGW and then take a decision whether to connect the old ML-units or sell them. I have BeoPort also and some link system I can't remember the name of :)
Anyhow, I have made my own software program in Java that communicates with the MLGW and controls everything. That said, I therefore don't need the other ML-units in my setup and probably won't get a NL/ML-converter. I still think one needs it even though you have MLGW. I thought I would give it a go when I have BS4 + MLGW up and running to see how integration works. I post my findings!
As to the question why I swapped the BS3 for BS4 was that I like the idea of online PUC and software updates. Furthermore I'm curious about the new NL-protocol and what they will do with it. And I like the Rj45 ethernet cabling for everything :)
The transition was quite smooth. New cabling to my BV12-65 (3 x Cat7 Ethernet cables) and then 5 speaker adapters Rj45 to Din - your dealer has them. So some cable swapping and I was good to go. Left is to let a B&O technician come to my home and measure the TV for optimal configuration - new with the BeoSystem 4 I think.
My first impression is that there are many more options than BS3 - multiple sound settings and picture settings. A lot of other stuff in it too of course, such as Smart TV and compatibility with their remote app for iPad.
However I can't let go of the feeling that BS3 actually delivered better picture, at least for television with non-HD content.
BUT, still, I haven't solved the MLGW-issue :(
Any further suggestions?
Anybody knows what to enter in the SN-field of MLGW for NetLink products? I put in the serial number...
Thanks again, hope I answered all the questions!