Flash 10 on Fedora 10 x86_64

If you are using Flash 10, you do not need libflashsupport anymore as the usage of ALSA has been fixed in this version.

Users of Fedora x86_64 must install the nspluginwrapper.i386 package to enable the 32-bit Adobe Flash Player plug-in in Firefox, and the libflashsupport.i386 package to enable sound from the plug-in.

Source: Fedora Project