Like any ordinary file system, FileMajik PRO can access each file separately. It can also handle "CPK files", i.e. files into which many data files have been packed.

Creating data [CPK File Builder]

You can use "CPK File Builder" to pack files into a CPK file.
No packing is required for files that are accessed individually.

Loading files [Unity]

FileMajik PRO loads files via a C# wrapper API.
ADX and Sofdec both provide a dedicated component but FileMajik PRO does not. You must add a script that manages file loading to a game object.