The forth alpha release of Gnash has just been made at version 0.8.1. Gnash is a GPL'd Flash movie player and browser plugin for Firefox, Mozilla, Konqueror, and Opera. Gnash supports many SWF v7 features and ActionScript2 classes. Gnash also runs on many GNU/Linux distributions, embedded GNU/Linux, FreeBSD, NetBSD, OpenBSD, non x86 processors, and 64 bit architectures. Ports to Darwin and Windows are in progress for a future release. The plugin works best with Firefox 1.0.4 or newer, and should work in any Mozilla based browser. There is also a standalone player for GNOME or KDE based desktops.
http://gnashdev.org/?q=node/42