Well I'm sure you know title's aren't covered by copyright, so no concern there. I wouldn't worry about it. My second book, I googled it when I came up with the title, nothing. Then I googled it after I released it and one of the top pop stars in the world had released a song with the same title. Not only that, each of the books in my trilogy has a song in it, and the titles are the song. (I wrote lyrics for all of them in the books). The meaning of the songs were totally different.
I have a book where the lead character is an actor and I needed titles for the movies he was in. The first movie was okay, but the second movie, I drove myself crazy trying to find a title that wasn't already a movie. Ended up using the title of one of my other books which worked fabulously, plot wise.
There is so much repetition in titles it's really hard to avoid.
Just remember to put movie, dvd and trailer, in your negative keywords when advertising it.