opening SOUND.dat file on prinny 1 for psp

[skumpulon]

So I initially wanted to find find out why the uploaded wav files for prinny 1 for the psp are nearly all cut out at the end, (which led to many of the the prinny sentences ending with doo, instead of dood, which BLOWS) but I cant seem to figure out how to open the dat files themselves.

So I have the SOUND.dat file extracted, but I don't know how to open it. It's a pretty sizeable file as well, even bigger than the level dat file.