Those should all be downloadable. They are also the original, uncompressed files (the ones in the YouTube video sound like they were recorded ingame, and then run through Audacity or Adobe Audition to filter out background noise)
bro are you talking S H I T ?
j/k you're probably right about the quality, but I did actually pull them from the game. I used Ravioli game tools.
Also I'm pretty sure the quality loss was from rendering them into a video, then uploading to youtube