Final Fantasy on PS1 just replaying credits.

I am new to emulation and am trying to play final fantasy 7 on duck station. After downloading the game files of Vimm's lair I extract the .7z files to get a .cue and .bin file for each disc(duck station doesn't see the .7z so I assumed extracting with 7zip was the logical next step). Upon starting the first disc for both a .bin or a .cue it would just replay some credits in a loop. If anyone could offer any information on how to fix this I would greatly appreciate it!