LucasArts has made it pretty clear they don't approve of sound porting between the two games.
Which is all kinds of stupid, because THEY did it.
They own the rights to the sounds. They can do whatever they want with them. You don't own the rights to anything. You can only do what they let you. See the difference?
I've seen sounds and models ported between games. For example: In the Star Wars Battlefront series, modders have ported all sorts of models and have even done conversions from one game to the other. I've seen mods that ports sound effects from Republic Command to Battlefront1 and JK2 as well. Now, Battlefront and RC are both done by pandemic, whist JK2 is done by Raven, but transfers from JK3 to JK2 should cause a problem since they (and I'm just assuming) are both Raven.
The LucasArts legal affairs department has specifically told us that porting sounds between the two games is off-limits. They don't care about maps or models, however.
Fine, but can I at least have the bloody model?!?!
I loved that second video, especially the line 'some day you're gonna have to teach me how to do that'. And from 3:24 to 3:30, Desann's jaw movements are soooo funny! Also, at 2:55, it looks like his heart beating. Attacks of the Broken Models! - Xfire Video