I'll see what I can do with the sample. Of course whatever I do software-wise would be external to the player software (ie a hijack userland program). We could utilise the serial port used on tuner connection but the audio is baseband so I'd unable to utilise the MPX input easily. You'd therefore need to use the aux in, although I thought I read somewhere that there is an I2S input available and there's an SP/DIF output on the module.

EDIT: Forgot to say the module they're supplying is L-Band capable.