Free Sothink FLV Player - Version 1.0 Build 70604 Sothink FLV Player, also known as Flash Video Player, is a 100% free FLV Player. This flash video player can play all files with FLV extension (*.flv), and play FLV video files encoded by different codecs, including Screen Video, Sorenson H. 263, on2 vp6, etc. It is a small-sized and easy-to-use FLV Player. By double-clicking flv files or dragging and dropping them to the window, you can enjoy downloaded flash videos offline at any time you like.