What do I do with this?:

Firstly you'll want to download the files you want of course.

PS3 Voices has all the voice files from the PS3 version converted for use with the PC version. Should be the most noticable upgrade. The only files that weren't ported were the majority of the lines from the descruction derby announcer because the PS3 version is missing these files due to how the audio engine for that version works. I use files from the Xbox 360 version for these.

PS3 Music is all the music files from the PS3 version of course. :P might not be super noticable, but XMA compression drives me crazy, so as far as I'm concerned it's better.

PS3 Cutscenes is kinda experimental as I had issues building SR2_CUTSCENES.xwb. I got around this by manually encoding the files to MS-ADPCM and then created this bank using XWBTool. I then patched the bank by changing the header to exactly match what XACT would've output had it not had any issues building large XWB banks containing ADPCM encoded files. I did some testing by making smaller banks I can confirm that this should be 100%, although I did see that one guy on the forums was having trouble with his audio mod so who knows. SR2_ACTIVITY_CUTSCENES.xwb should be completely fine though.

I'd also label PS3 Ambient Music as experimental because I used WMA (which I think is actually XWMA in this case which I also think is a subtype to WMA unrelated to XMA) as if I had used ADPCM, the file would be larger than 4GB, which is a size incompatible with XWB as far as I can tell. The reason I'm considering this a potential issue is because I've heard that SR2 has issues with WMA and I'm not entirely sure how much I trust the thing to work.

Anyway, here's how you install the thing:

Assuming you have Juiced Patch installed, extract the contents of the zips you want to your mods directory. If you decide to put the XWB banks into a subdirectory in the mods directory instead of the root of the mods directory, you'll have to use SR2JP-ModManager, which can be found here: https://github.com/kobraworksmodding/SR2JP-ModManager to enable the mod, or you can just edit loose.txt directly (as of 9.0.5 this is what you have to edit).