Hello,
This is my first post in this section.
I got a Concero HD a few weeks ago.
Since I use Linux on all the computers I use for Audio (Squeezebox Touch, Laptop, small arm device).
Anyway, Since the Concero had problems on Linux (only worked at 96khz), I sent an e-mail to Resonessance a couple of weeks ago, and Mark told me they were working on it.
Two days ago they sent me a beta version of firmware 2.4.0, and now is seems to work on all the sample rates up to 352 and on DSD on the Squeezebox with EDO and the arm device (haven't tried the Laptop yet, but am confident it will work).
This should mean that Android should work. I would assume the firmware will fix all versions of Concero.
Cheers.