Adding sound to Iceweasel

Iceweasel problem with youtube sound

I'm using debian squeeze and like it. Unfortunately Iceweasel browser does not have sound support for flash. I've checked installed packages using next command:

debian:/etc/iceweasel# aptitude search flash

p flashbake - automated snapshots with git

v flashblock -

p flashgot - transitional dummy package

i flashplugin-nonfree - Adobe Flash Player — втулок переглядача

i flashplugin-nonfree-extrasound - Adobe Flash Player platform support library for Esoun

p flashrom - Identify, read, write, erase, and verify BIOS/ROM/fla

p flashybrid - automates use of a flash disk as the root filesystem

v iceape-flashgot -

v icedove-flashgot -

v iceweasel-flashblock -

v iceweasel-flashgot -

p m16c-flash - Flash programmer for Renesas M16C and R8C microcontro

p python-webflash - Portable flash messages for Python WSGI applications

p tvflash - Mellanox firmware update utility

p vrflash - tool to flash kernels and romdisks to Agenda VR

p xul-ext-flashblock - mozilla extension to block Adobe Flash content

p xul-ext-flashgot - Turns every supported download manager into a downloa

v xulrunner-flashgot -

flashplugin is installed. It's OK. After this I've checked iceweasel config file:

cd /etc/iceweasel/

debian:/etc/iceweasel# ls

iceweaselrc pref profile

debian:/etc/iceweasel# vim iceweaselrc

and change value of ICEWEASEL_DSP from 'none' to 'auto'

# which /dev/dsp wrapper to use

ICEWEASEL_DSP="auto"

After this I restarted browser and got a sound.