Audio problem: In the scene where everyone's singing the theme to the Partridge Family, Bobby gets up and walks over to a two-keyboard organ and starts playing on the top row. What we hear is piano. It's possible that the organ was set to emulate piano, but he never turned it on first. It's also pretty clear that he's not actually playing anyway, as his keystrikes aren't matching up with what we hear.
Audio problem: When Romy is talking to Elena, Romy is eating chips. Before she says one of her lines she eats a handful of chips. Not only did her mouth not move, but it would be impossible to talk that way with that many chips in your mouth.
Audio problem: During the scene where Jack Hammer is sold out, the 'bin robot' says 'Hey, isn't that the guy that fixed Fender's neck?' Next someone in the crowd says 'Yeah, that g-ixes bots!' The phrase should be 'Yeah, that guy fixes bots!' There seems to be a half-second clip that is missing in the film.
Audio problem: In the scene when Grandma is at the tournament (but not yet skiing), in the cuts when the band isn't visible, if you listen closely, the lead singer isn't singing. (01:05:05)
Audio problem: Towards the end, IlIana says, "He means thank you," her lips barely even match. And it kind of glitches.