Music on Mac

Hello,
Ive recently downloaded the game for my Mac, there was long loading times so I followed this guide from the forum

“Go to /Users/~/pkmn_insurg , drive C, Program Files x86, Pokemon Insurgence, Audio. Then use an audio converter to convert all the .ogg files in the BGM and SE folders into .wav files. I used “MediaHuman audio converter”, it was free. Delete all the .ogg files from those folders and replace them with the newly converted .wav files. Then, as a final step, you have to manually change all the file name extensions of the converted files from .wav to .ogg”

After doing this, I found that battle music wouldn’t play, I then added .ogg, not sure if I added it right, but the battle music file as seen in the screenshot below now plays battle music, and switches between the battle music and shade forest music like normal.

I was just wondering if anyone knew the difference, so that I could change any other tracks, any help would be appreciated.