So I posted this a while ago but the single dude/dudette that helped me also had no idea what was going on. When I run the game, there's no audio. When I choose my save file, there's no audio. Nothing ever sounds no matter where I go in the game.
I've tried a lot. I've redownloaded the game twice, in one redownload I chose to replace all existent files and in the second one I deleted everything, even my save file, and the redownload but to no avail. I've checked the game properties (when you press F1, the window that pops up) and both of the sound options are ticked/on. I've tried sending someone my save file and they say that it works fine. It also only happens in Rejuvenation, as I've tried with other fan games (Reborn and Uranium) and they sound just fine. And if someone asks: Yes, the volume option in the game is not 0.
EDIT: My general volume is in 100 right now and it will stay like that. And just in case, I've tested most of the audio files on Windows Media Player and they work fine.
EDIT 2: I've also tried to Run the game in compatibility more for pretty much every possible option, also didn't work...
FINAL EDIT: YES I SOLVED IT. What I did was redownloading the game a fourth time, but instead of replacing or deleting the old files after extraction, I just extracted all files directly on my desk (in a folder, obviously). So both my new and old files existed at the same time, but for some reason the ones in my desk worked perfectly while the ones in my documents didn't. I have absolutely no idea why this worked, but if anyone ever gets through the same trouble that I did, try everything I did and everything everyone suggested me to do. Also less importantly if anyone knows why doing this fixed it do tell me.