There seems to be no info on their site as far as a schematic or parts details but 99% chance they are not using a CM1xx IC. There are some mentions on their forum of possibly doing AllStar using the ALSA driver. And there is a chan_alsa driver in the ASL code, but no references to it in rpt.conf or any other conf files other than modules.conf.
Some web searches turn up some additional info that looks promising:
With a post name like that you know you’re off to a good start.
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This looks like a more full-featured driver.
Between the above 2 links there is probably enough info to get it working. May or may not be easy, but would be a fun experiment.
Has anyone used ALSA on ASL? Another interesting possibility it would open up is using the onboard audio chip on a RPi or Dell 3040 miniPC for example. Might enable a radioless node to be built with no URI needed. Though as CM fobs are only a few $ and provide some extra I/Os (PTT etc) it wouldn’t be a big cost or space savings.