One thing you might want to do when configuring slackware is to install the flash plugin in Firefox. Fortunately this is very simple.
Step 1: Download Flash Plugin
First download the flash plugin tar.gz file from the adobe website other flash versions download page.
Select the relevant "32/64-bit" linux type and then select the ".tar.gz" option to download the plugin.
Step 2: Decompress The Tar File
Run the tar command to decompress the tar.gz file. This creates a file named "libflashplayer.so".
#tar xvzf install_flash_player_linux.tar.gz
Step 3: Copy to mozilla plugins directory
To install the plugin in Firefox simply copy the .so file into the mozilla plugins directory.
#cp libflashplayer.so /usr/lib/mozilla/plugins/
Step 4 : Restart Firefox
Finally restart Firefox and test if you can see a flash video. The homepage of this site displays a flash video so if you can see the video then flash is working.