So, I just reinstalled Disco once in order to get the Bloom mod. I then reactivated the two mods I was using, HD Textures and Hidamari Sound Mod, and started up the game. The texture mod seems to be working just fine, at least from what I can tell, but the sound mod simply isn't there. I de- and reactivated it several times, downloaded it again, activated it again, and it still didn't work. I checked the files in the audio folders and they hadn't actually changed. Still vanilla sounds. So, ye. What do?
Alright, I have yet to actually copy the files. But I guess I found the error. FLMM was apparently failing to extract the files, but kept on insisting that it did. So, I've manually extracted both the HD Textures mod and the sound mod and am now still trying to make FLMM recognize the latter in its own damn mods folder.
Well, managed to fix FLMM's problem with recognizing the sound mod. Activated both, from what I can tell, the texture mod is working while the sound mod still isn't. So I'll have to actually try copying the files around... some other time.