if you use retroarch:
download core:
Nintendo - SNES/ Famicon (Snes9x) supports: roms smc, sfc, swc, fig, bs
after
archive settings.conf (collections/Super Mario All Stars/settings.conf )
list.path = collections/%ITEM_COLLECTION_NAME%
list.extensions = smc,sfc,swc,fig,bs
launcher = Super Nintendo Entertainment System
media.system_artwork = collections/%ITEM_COLLECTION_NAME%/
archive Super Nintendo Entertainment System.conf (launchers/Super Nintendo Entertainment System.conf)
executable = %RETROFE_PATH%\emulators\retroarch\retroarch.exe
arguments = retroarch -L "cores\snes9x_libretro.dll" "%ITEM_FILEPATH%"
it should work