olemol:
-Have anyone tried it before?
similar, and so have others
olemol: can i shuffle between macbook and iphone as the music source?
yes
olemol: or can it only be set up with one of them at the time?
each iDevice can "talk" wirelessly to the AE, I presume that last one to talk will gain control (that is how my ATV tends to work)
olemol:
-Do i need any cross-over cables to connect the bl3s to the AExpress?
you will need a mini-jack stereo splitter and then these cables from B&O:
...To a non-Bang & Olufsen
system:
Use a special adapter with an
ordinary phono/RCA plug in one
end, and a DIN-plug in the other
(optional accessory, available from
your Bang & Olufsen retailer).
Remember to set the SETUP switch
to LINE.
olemol:
-How do I set up iTunes to play wireless?
good question ! I thought it was a preferences setting, but I can't find it now - look for a small arrow on the bottom right hand corner of the iTunes window - clicking it should present you with a choice of the Macbook's speakers or the AE
olemol: can it be played wireless?
yes
First B&O (1976) was a Beogram 1500 ... latest (2011) change has been to couple the BL11 with the BL6Ks *sounds superb*