Danganronpa Kibou no Gakuen ro Zetsubou no Koukousei (PSP The Best)

[Ellis]

Hi!
I'm currently playing this game, but I've encountered a problem.
The sound works perfectly fine, except during pre-rendered movies, like the opening and execution scenes. The movies are all working visually-vise (so far, I've just finished my first trial), it's just the sound that's missing.

I'm playing the game on the PPSSPP v0.8.1-549-g8eab028 (64-bit) build with these settings (I've made the ones that I think I've changed bold):
http://pastebin.com/LKPJ26m1
I changed the ones in bold to get past the investigation problem (not being able to inspect things in the rooms) in the beginning of chapter one. So that works fine now.

The ISO I'm using is the translated one can be found here: http://www.nyaa.eu/?page=view&tid=445840

My graphics card: NVIDIA GeForce GTX 560 Ti

Could someone please tell me what's causing the sound to disappear and help me get it back?
Thank you in advance!

Edit: I have a solution now, if anyone's interested.
You simply need to go to Settings>Audio>Download ATRAC3+ plugin and enable it by downloading it. That fixed the audio problem for me, at least.