First try:
Beoport connected to the computer in USB and Mac Audio Out to Beoport Audio In.
Bl3500 (Opt 6) connected to Beoport via Masterlink.
The Mac is declared as Audiomaster in LP2.
The Beoport seems to be seen because the windows says SW 1.3.
Also the volume indicator from LP2 change when you turn it up or down.
But no sound, no reaction from the BL3500. No clock either.
I’m soldering a mini jack to an IR receiver to see if it changes something.