Found this recently but it's only related to the sound files:
http://www.hcs64.com/mboard/forum.php?showthread=25744

hey guys, I'd need a little help there. On the Sega vintage Collection games, I'd like to get the wallpapers that are displayed behind the emulator screen. That is because they appear in great resolution with no elements pasted over it. Look for example there http://www.youtube.com/watch?v=Wpm9kgXlR...