YouTube Video Player is a standalone tool to play Flash videos (FLV files).
It supports zoom 0.5x/1x/2x mode, full screen mode, playback progress control, volume control.
YouTube Video Player provides file association and drag-and-drop support, so you can double-click or drag and drop FLV files to the program to play them. You can also use it to create and manage playlists.
10 day free trial for all Windows versions.