QUOTE(enderandrew @ Dec 6 2006, 12:15 AM)

XBMC runs python scripts, so it isn't completely unfeasible.
Granted, yes. However, one would rip the Python interpreter out of XBMC, implement it as its own piece of software, and.. well.
If, theoretically, one could implement the OpenGL and other calls as necessary to run Frets on Fire on top of XBMC? Well. You would need an Xbox modded up to more than 128MB, 'cause damn the memory needs. Granted, one could rip out the VMM code from MAMEoX or the like, but.. now we're just insane.
So, as you said. Not completely unfeasible, but.