Mighty steep hill to climb. System diver software is a far different thing then beginners Fortran. Also much hardware like this relies on patented or other encumbered secret sauce. This is why many drivers are binary blobs without any available source. You would have to reverse engineer the hardware interface as a fist step then do the software decoding.
It is unclear that All In Wonder hardware is still being made in any version. All I find is used. Which means getting people with the needed talent to help is going to be pretty slim.
https://en.wikipedia.org/wiki/All-in-Wonder
Better off to simply buy a newer TV tuner card or USB dongle that will work with Linux
Don’t use one so maybe someone that does can recommend some