Free Flash Media Player: Flowplayer

Flash

Flowplayer is a free Flash media player that can configured & styled to fit your needs.
It supports multiple media types: FLV, H.264 coded MP4, JPG, PNG & MP3.

Some features of Flowplayer:

Full screen mode
Progressive download
Ability to play multiple files in 1 stream & ability to include images
Streaming support: Flash Media Server, Wowza & Red5
Quick access to specific chapters via thumbnails
Protection against hotlinking to media files
Embed links

This Flash media player can also be controlled with JavaScript & from other Flash movies.
Besides the free GPL license, there are several other paid licenses. So, make sure you check the licensing before using it.
P.S. This is not a very fresh resource but realized that it was missing in WRD & here it is.

Requirements: No Requirements
Website: http://www.flowplayer.org/
Download: http://www.flowplayer.org/download.html