FLV Downloadable?

I had a question. I have a video player on a site that I’m developing and the project owner doesnt want the end users to be able to download the video there hard drive for replay later.

My solution was to convert it to a flv file and then give it an obscure name and then have the player load it in progressively. Now if someone downloads the swf they wont have the video, but a video player. Correct?

Then if a decompiler is used, they’ll be able to grab the .flv from the source of the decompiler.

Is there anyway to stop this?