Hi,
Sooner or later, that difference will likely disappear. For all intents and purposes, and STUPIDITY by many European folks and companies, they are preventing the sales of their product in America by doing so, and they know they want the money from the American market, so preventing the folks in America from seeing/hearing it is stupid!
At the very least, the CD/Music business did not get into that silly issue, and prevented their bands from showing their music elsewhere.
I imagine that as time goes by, for DVD's, some of that BS will come to an end, and become totally invisible, when the European folks figure out they can gain more by getting rid of it, than they can in the "rights" for something that doesn't sell enough at all!
But something you create in your computer, is, generally, clear of these things and should play just fine elsewhere, the language that it was done in not withstanding, though I can not tell you the difference if the computer has Windows in Chinese or Japanese. My sister's had Windows 7 in French, and it was able to play everything just fine off any CD, but the words and translations of words it did not recognize was super bad on Power Point and such.