It is not possible with the mac and bm-link.
Bm-link was built to support N.Music and N.Radio. If you want more, you need to use a PC and BeoPlayer (but then you lose the display on your BS3000, and also have to use Windows ).
The only solution I found was to buy a BeoLink Active... and put the IR on the shelf (it doesn't work with the active) and connect the speakers to the active.
Stan