i'm not sure i'm allowed to say the website where you can find the music restoration mod, but it's not hard to find if you look for it! as for finding the old music, and also the new music, you can find all the old music on a channel called "DeadBrokenMind," who uploads AVN soundtracks on his channel. eternum is his most popular I think. and as for the new music, there's a guy called "Tateshiko" who was asked to help replace the removed tracks. you can find his OST on his channel. I hope this helps! :D