I did some research on RetroArch earlier this year and I remember that it's a frontend for the libretro API: https://www.libretro.com/index.php/api/
The libretro API is a highly advanced tool. There is no way to support this library and its emulators in my frontend. If you want to continue using RetroArch, do it.
EmuCon will never be able to handle game files the way RetroArch/libretro API does.
According to this guide https://github.com/OpenEmu/OpenEmu/wiki/User-guide:-CD-based-games, .cue files can have multiple .bin files in it, but you cannot have a single .cue file with multiple discs game listed in it.
Those extra .bin files you're talking about are audio tracks. I wouldn't recommend having a CD image with multiple files (file 1 is the data track1 and extra multiple files are the audio tracks).
It's far better to have a single CD image with its data+audio tracks (.cue file + .bin file).
This is what you were referring to with your games with multiple files, right ?
Now, if you have a game with multiple CDs, instead of using .cue file, you need to create a .m3u file listing all .cue files inside. See here for details:
Latest EmuCon release already supports .m3u files... I think some emulators support this file extension to handle multiple CDs games.
Ciro Alfredo Consentino
EmuCon Home: http://emuloader.mameworld.info/emucon
MCM Plus: http://mcm.mameworld.info
Edited by CiroConsentino (12/14/16 03:59 AM)