TL;DR - my mistake! The correct .rar with all the files is now up. Try re-downloading it now. Please let me know if you have any issues and we'll get it sorted!
Longer version:
I produce music and graphics on separate computers. Due to an unfortunate decision in file naming, I had two identically named versions of the pack in different locations and when I made the product page here, I uploaded the music-only version from the other computer instead of the proper one which has the rest of the assets added.
As a bonus, you can keep the uncompressed .wav versions of the music that were in the mistaken version I previously had uploaded, which are not part of the usual package!