No, because a patch won't fix the fact that the drive is incapable of doing it.
No, the problem is that Wii hardware doesn't align with all DVD spec for licensing official support (no digital audio). This is why suppossedly Nintendo was originally planning a "DVD Wii" revision, though those plans were scrapped.
Nintendo should consider letting Panasonic do a media focused Wii variant, like they did with GameCube/Q. Panasonic could even make it blu-ray equipped and probably still price competitively with PS3 ($299).