I really don't know how many times I can keep repeating stuff like this over, and over..but..
IF the device can be controlled remotely, via a network protocol that is either published OR can be figured out...
You can write a DCE driver for LinuxMCE to communicate with it.
and therefore use it as a media player in LinuxMCE.
It is precisely what I did with the SmartQ V7 MID.