I was able to work around these errors by first building my project that contained the irrKlang library files using Visual Studio 2022. This was done in a separate directory in a Visual Studio Project file.

To do this you'll need to know how to build sources files and link all your libraries required for your program in Visual Studio 2022. This resolved the undefined references issues for me.

Afterwards I was able to get my executable running with irrKlang playing audio by copying the executable built by Visual Studio 2022 back into my directory that contained all of the assets for my program as well as all the .DLL files needed for irrKlang, i.e. irrKlang.dll, ikpFlac.dll, ikpMP3.dll.