/vr/ - Retro Games

Ok /vr/, you seem to talk about emulation quite a bit, so help me out.
I used to use mednafen for almost everything, but that emulator seems to have latency issues with big LED TVs that other emulators do not (it does for me at least, an issue I don't have with other emulators)

So I want to try RetroArch for SNES and NES, hopefully with the bsnes core and FCEUX core. The thing is, after going through the basic configuration, I can only get it to work through the GUI, I haven't been able to do the usual "run game.smc into retroarch.exe" and get it to work. I'd like to run this from XBMC, so I need to at least be able to run a game, on either core depending of the kind of rom, through usual command line options.

Any suggestions?