So I had recently purchased the "SEGA Genesis & Mega Drive Classics" from Steam. As I was playing Sonic 3 & Knuckles, I started to miss the PC soundtrack that I grew up with (no offense to the Genesis soundtrack). Since this is on PC, I thought it would be very easy to mod. So I wen through the files to find that the games could be files which are a ".pak" format. So I did some research to see what kind of file it is, and based on what I search it seems to be something similar to a ".rar" format, only for games though. So I found and followed this video to see how could I access the file, however when I tried it out, I got an error saying that the file can't be accessed. So what do I do now? Is it even possible to change the soundtrack, or not because the games are emulated? Hope to get an answer from you guys!