Hello everyone. I just saw that topic and am sorry I didn't reply earlier.
MediaVault is not easy to be ported to AROS natively, since it uses ReAction, and as much as I know, there is no way to build a reaction application for AROS. Please correct me if I am wrong.
Also, it needs a JSON parsing library. The one that I am using is called Jansson, and I am not sure it exists for AROS either. Another library could be used, which means that there will be a need to change that part of the code as well.
In my opinion, if you need to do the above, then 2/3 of the code needs to change, and maybe it would be better to make a new application from the scratch.
But I do plan to work on a 68k version of the application. Do the 68k ReAction apps work in a way on AROS? Sorry for my ignorance, but I am not using AROS, except for some times that I tried Icaros.