[RM2K] "NOT IMPLEMENTED" MP3 ERROR

So, I was putting some placeholder MP3's in my 2k project, and this happened when I tried to play one:



This "Not Implemented" warning just keeps endlessly popping up and as you can see, stacks, pretty much clogging up my PC and forcing me to end the program with Task Manager to stop it.

Any fix for this? Is it a known problem? I've heard of a "harmony.dll" issue- is this it?

I have the official 2K translation, the standalone version downloaded off of the Humble Bundle site.