If you had everything connected as described, then you ought to be fine. When the BeoLab 5's 'see' an audio source 'displayed' on the PL cable, they automatically check the S/P-DIF input first, and if a signal is present, they lock onto it and stay. This is one major reason that you must use fully-mounted PL cables in these set-ups. The data signal must be present.
Since the mini is playing when it is connected to the 5's instead of the 9000, we can expect that the cables are OK. Try this...reconnect all of the B&O gear as it should be (listed in the OP) play the CD and try to adjust bass or treble...if there is an audible change, then you do have a problem of some sort. No change, no problem!
Russ
Russ, the spdif channel works just fine when I have tv in option1 and the bs9000 in option 1, with only ML running between BS9000 and BV10. Powerlinks connected to the BS9000.
But would a better option be to connect a "v.mem" thingy with only the spdif, and set it with an spdif entry, should this give sound to the Beolab 5's via powerlinks connected to TV?
Having the system set up in my original way:
BV10 -> BS9000 with ML
BV10 -> Beolab5 with Powerlink
BS9000 -> Beolab5 with digital coaxial
Did not make the Beolab 5's listen to the SPDIF even when I chose CD.