Install Flash Player on Debian Linux

After downloading the file (.tar.gz). I should be able to issue the command in Terminal as the superuser:

tar xvf install_flash_player_11_linux.i386.tar.gz

I should see:

libflashplayer.so
usr/
usr/bin/
usr/bin/flash-player-properties
usr/share/
usr/share/kde4/

usr/share/kde4/services/
usr/share/kde4/services/kcm_adobe_flash_player.desktop
usr/share/applications/
usr/share/applications/flash-player-properties.desktop
usr/share/icons/
usr/share/icons/hicolor/
usr/share/icons/hicolor/22x22/
usr/share/icons/hicolor/22x22/apps/
usr/share/icons/hicolor/22x22/apps/flash-player-properties.png
usr/share/icons/hicolor/48x48/
usr/share/icons/hicolor/48x48/apps/
usr/share/icons/hicolor/48x48/apps/flash-player-properties.png
usr/share/icons/hicolor/24x24/
usr/share/icons/hicolor/24x24/apps/
usr/share/icons/hicolor/24x24/apps/flash-player-properties.png
usr/share/icons/hicolor/32x32/
usr/share/icons/hicolor/32x32/apps/
usr/share/icons/hicolor/32x32/apps/flash-player-properties.png
usr/share/icons/hicolor/16x16/
usr/share/icons/hicolor/16x16/apps/
usr/share/icons/hicolor/16x16/apps/flash-player-properties.png
usr/share/pixmaps/
usr/share/pixmaps/flash-player-properties.png
usr/lib/
usr/lib/kde4/
usr/lib/kde4/kcm_adobe_flash_player.so

Then, type the commands:

cp libflashplayer.so /usr/lib/mozilla/plugins/

cp ./usr/bin/flash-player-properties /usr/local/bin

I do not know if it works or not for all computers. It works on my computer.

This page seems to tell me that it works.

Something more should be said. To get the sound, use:

alsactl init

I should see things like:

Unknown hardware: "HDA-Intel" "Intel ID 2805" "HDA:10ec0662,1565821f,00100101 HDA:80862805,80862805,00100000" "0x1565" "0x821f"
Hardware is initialized using a guess method

Thanks to this page, I got this skill.