Well, the Empire one is clearly not from the 4.2 mix at all...but I don't know about Star Wars, and Jedi may be based on it somewhat but it doesn't seem like it... Plus, if the 4.2 was included on DVD, some have mentioned making it a 5.1, but I think this is stupid to bother doing that - just make it 4.1, compile the two LFEs into one - I mean, Tora! Tora! Tora! is a 4.1 DVD...why can't Star Wars be? It'd be better for preservation, right?