You might have happened upon this player on more than a few websites. I just found it yesterday: a very customizable FLV, MP4, MP3, JPG, etc., player you can plug into your website and serve content.

JW FLV Media Player

After having used SlideShowPro for a while to deliver videos, I think this is a much better option. Very small file, configures in seconds, no extensions to install or Flash IDE required.