This was a far more informed posting than mine. Correct, I'm running 64-bit FC6 perfectly with on-board sound. However Mauriat has reminded me that I am running 32-bit Firefox so that is the main issue it seems for people. Xine/mplayer/vlc though have not let me down.. > I'm not saying which version to use, but most likely your sound will > be fixed by either (manually) upgrading ALSA or the kernel. However it > probably is more practical to upgrade Fedora as mentioned. But there's > always a chance that even an updated FC6 may have sound card issues. > > An added note. If you are interested in multimedia, 64-bit linux does > have some limitations. Certain things like web browser plugins and > using some 32-bit windows codecs may require some extra work to setup.