Problems with the change of titles of movies in iTunes?

Hey guys, I can download all my uni lectures on iTunes (which go to the movies) and change their current names (which is the date / time) to the names I want less, however, as soon as you play the name changes back to what was the first time imported. And this continues to happen, no matter how many times I can change again. I checked and also stored in the iTunes folder media as the name I want to keep low (as I have the iTunes folder to keep things organized checked) and I tried the option of "media consolidation" in the iTunes window. I have also tried saving as the name they want, when I download to my computer, but that does not work yet. Is anyone have any idea? Every time I play are all mixed conferences and I have to spend time sorting what is it again! Thanks

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