Over the past few weeks, I've been trying browser options beyond Firefox.  I've really enjoyed using the GTK-native browsers Epiphany and Galeon.  They are fast, both in loading and rendering pages.  But, the biggest issue I had is that 64 bit builds of these browsers can't use 32 bit plugins.  And Flash 9 is only available in its 32 bit version.  It's pretty hard to use the web these days without Flash, now that sites like Youtube have pushed Flash beyond advertisements and into the mainstream.

I did get Flash working in these browsers using nspluginwrapper, a nifty plugin that can embed other 32 bit plugins into a 64 bit browser. 

Steps to install nspluginwrapper

These instructions are targetting Ubuntu (tested on Edgy) but should be adapable to other distros.

1. Download these the two deb files, nspluginwrapper_0.9.91.3-2_amd64.deb and nspluginwrapper-i386_0.9.91.3-2_amd64.deb.  I created these files by downloading the latest version of nspluginwrapper from the project page rpms, then converting them to debs using alien.  If you'd like the latest version of nspluginwrapper, check the project page and convert using "sudo alien -d myfile.rpm".  You should get two rpm files from the project pages.
2. Install the two debs, using GDebi or, from the command line, with

   sudo dpkg -i nspluginwrapper_0.9.91.2-2_amd64.deb

   sudo dpkg -i nspluginwrapper-i386_0.9.91.2-2_amd64.deb

3. Download Flash 9 from Adobe.
4. Extract libflashplayer.so from the Adobe Flash archive.  Move it to some place permanent.   I suggest:

   sudo mkdir /opt/moz_plugins

   sudo mv libflashplayer.so /opt/moz_plugins

5. Run the command:

sudo nspluginwrapper -i /opt/moz_plugins/libflashplayer.so

That's it.  You should now be able to use Flash in your 64 bit browsers.  You can delete all the files you've downloaded, except the libflashplayer.so file  you moved into /opt/moz_plugins.

Note: This doesn't seem to take effect on Firefox 64 bit.  I suspect there's another step left to get that working.