[mido]

Thanks for the swift response. I did some further research and unfortunately all emulators made / ported by Richard Bannister (Nestopia, BSNES) are not command line supported on Mac OS X. Here's what he had to say:

Hi Mido,

I'm afraid that none of my projects support command line launches.

If you can figure out a way of making XBMC launch your games via Apple Events that should work - and you can achieve automatic full screen by turning on the required option in Preferences.

Cheers
Richard

Is there someway to launch the games via apple events within advanced launcher? After reading some of the posts on the link you provided, it doesn't seem like there are any solid alternative solutions based on Twiggaloo's tests.