
Adobe Flash plug-in 64bit
The major problem faced by 64-bit Linux users is getting Flash Player to work properly on the platform. With the latest version of Ubuntu, it installs the 32-bit release of Adobe Flash Player along with the necessary 32-bit libraries so it can work.
However, using 32-bit Flash is sometimes buggy (when it is working). What about a 64-bit version of Flash Player?
Gnash, the free (libre) alternative is not enough mature to work on all web sites. But Adobe is currently working on a 64-bit version of its player. It is now available in the labs for download. This is still a pre-release, so using this plug-in could make your browser unstable (also see warning at the end of this post).
Before installing it, you should remove any previous installation of Adobe Flash Player, you can use Synaptic (System -> Administration) for this purpose.
The downloaded file has the extension .tar.gz, it is a compression format like ZIP. You can double-click on it and extract the file (libflashplayer.so) to your home directory, or use the command line: “$ tar zxf libflashplayer-10.0.45.2.linux-x86_64.so.tar.gz“. Now, you need to copy the extracted file to a system directory. It is assumed that the extracted file is in your home directory.
$ sudo cp $HOME/libflashplayer.so /usr/lib/mozilla/plugins/
You can now launch Firefox or Chromium on your 64-bit system and watch Flash media content. My own experience is a more stable system! But do not forget, Flash is not a free software.
Updated 2010-06-08: Adobe issued a security warning for all Flash players (all platforms) covering 10.0.45.2 and earlier release. Which most probably means that it includes the 64bit version as well (this is not confirmed). The only safe version (recommended by Adobe itself) at the time of writing is Flash 10.1 RC which is sadly 32bit-only.