It comes with the territory. Sorry.
BUT! How about getting a Rosetta Stone language program and one by one have a kid at the computer for language lesson. It really can be fun learning that way.
Why not go outside in the yard with them so you can monitor them? Basically you've got to re do your routine to fit in around them. Maybe you can get something for tomorrow's dinner started the night before. Like take it out of the freezer, let it defrost overnight, get it prepared to throw in the oven and let it be till it's done at dinner. Or choose simpler meals that don't take a lot of prep time.
"Better enrichment...." yes maybe. But there's a lot of unnecessary tension and screaming. Maybe you should compromise by getting a 2 hour movie you approve of, set the kids down to watch it, and go about your stuff? Hubby can help in the evening surely! At their age they don't know the reason for a foreign language.. If you have a reason for it, like living in that language, that's different. But when no other kids speak it, they aren't getting repetition. When you and hubby don't use it at home, they aren't hearing it. So there's confusion. Yes at their age it's an ideal time to hear another language. But it's up to you and hubby to use it consistently around them. Ultimately they'll soak it up like a sponge. But it has to be present. You can't expect the kids, at their age, to learn it and you don't reinforce it. That won't work. Learning it has to be somewhat fun. That's why Rosetta Stone is so good. Pictures, the language, review....it really works well. I have one myself, my son has one, and I'd suggest it to anyone.