Peter,
that is why I changed my Beosound 2500 to an Ouverture, to make use of the AUX input using a mac mini.
The aux in the Beosound 2500 was blocked for the ML converter (type 1614 or type 1611).
So, if you want the Beosound as an audio master in your setup and make use of the aux input (aux is in and output!), you need to change to an Ouverture (or BS4/9000).
When I finish the mac mini setup (using a 10" touch screen LCD with it as a front row/cover flow input device) I will post pictures.
Ralf
My B&O Icons:
Home Cinema: Beosystem 4, Beolab 7-4 (Center), Beolab 9 (Fronts), Beolab 4000 (Rears). Projector: Sony VPL-HW55
Home Office: BeoVision 11-46, 4 x Beolab 3, BeoCenter 9300 (BLC 1611/ML/NL)
Bedroom: Sony KD-65XH9077, Beosound Essence MK II with Beolab 6002 and Beolab 11 (all white, wall-mounted)
Dart Room: BeoPlay V1-40 on floor stand
Guest Room: BeoVision 7-40 MK IV, Beolab 7-2, BeoSound Ouverture