Weird enough, when you see the 100% ending video by playing the game with the Arabic, Brazilian Portuguese, Spanish-Latin or Japanese languages, the video just play the background music and never plays the narrator voice explaing the video. The mod manages to fix it by adding the narrator voice's back.

And when you see the ending in German, French, Italian and Spanish-Spain, you will hear an unused version with some extra sentences, where we learn that the characters Tiny Tiger, Papu Papu, Koala Kong and Pinstripe felt offended for not appearing in the game, make a manifestation in front of the developers' building, but ended up arrested when they realized they were in front of the wrong building. Although it is interesting to have an extended version of the ending, this audio ends up losing synchronization at the end of the video, precisely because it is longer (2min50s) than the video that ended up in the game (2min30s). The mod manages to fix it by changing those extended audio files.

First, download the file Crash4_audio_fix_100ending.zip to your computer. After that, extract the file with a program that manages compressed files (like WinRAR for example), and place all the eight audio files in the game's installation folder (by default C:\Program Files (x86)\Steam\steamapps\common\Crash Bandicoot 4\Lava\Content\Movies\Audio), overwrite it and you are ready to go.

• Crash Bandicoot 4 - Audio Fix:
  https://drive.google.com/file/d/1NN214pcsxsXnqMY6mKdTCDWMQm9qgk7x/view?usp=sharing

I also made a undub mod for Crash Bandicoot 4 ! Check it out:
https://test1.login.steam.hlxgame.cc/sharedfiles/filedetails/?id=2909052216