Both gnash and lightspark claim to be replacements, with Mozilla Firefox 
compatibility, for the Adobe Flash player/plugin.

Does anyone have experience with either of these applications?

Does anyone know where to find built SL6x X86-64 and IA-32 RPMs for 
either of these (preferably reasonably current versions to maintain 
compatibility with the current Flash data format)?  Building these from 
source require many additional packages (e.g., for lightspark:

To compile this software you need to install development packages for
llvm (version 2.8, 3.0, 3.1 or 3.2), opengl, curl, zlib, libavcodec,
libglew, pcre, librtmp, cairo, libboost-filesystem, libxml++ (version
2.33.1 or newer), gtk-2, libjpeg, libavformat, pango, liblzma

If sound is enabled (on by default), you will also need the
development package for pulseaudio-libs and/or libsdl.

If the browser plugin is enabled (on by default), you will need the
development package for xulrunner.

Install also gcc (version 4.6.0 or newer), cmake and nasm.
).

Thanks for any leads.

Yasha Karant