[QUESTION] Can I pay someone to explain how to use this like I'm a 5th grader? about libmpegh

[sclsj]

Are you familiar with the Terminal and how to compile programs?

You should also adjust the CICP to fit the channel layout you have in your setup. The 12 or 24 channel wav you mentioned is the default output which won't work for everyone.

Now unfortunately the 360 audio files follow the specs of Sony but the decoder follows the specs of mpeg-h (which seems to be written partially by Fraunhofer-IIS) which seems to disagree on the channel layout (e.g. what exactly is 5/2.1) so I haven't figured out the CICP indexes yet.

[sclsj]

TL;DR
In Terminal run ia_mpeghd_testbench -ifile:<drag 360 file here> -ofile:<drag it here again and replace the file extension with wav>

[sclsj]

If you are using Windows, you can grab the compiled files from releases (both .lib and .exe)
If you are using Linux / macOS / etc:

$ git clone "https://github.com/ittiam-systems/libmpegh"
$ cd libmpegh
$ mkdir bin
$ cd bin
$ cmake ..
$ cmake --build .

If that doesn't work, try (after git clone)

$ cd libmpegh
$ autoreconf -if
$ ./configure
$ make