apt-get install alsa-oss

apt-get install  libesd-alsa0

vi  ~/.asoundrc
#############################################
pcm.pcmmix {
   type dmix
   ipc_key 1024
   slave {
       pcm "hw:0,0" # this must be your actual device
                    # hw:0,0 should work for most
       period_size 1024 # must be power of 2
       buffer_size 4096 # must be multiple of period_size
       rate 44100 # most ALSA applications can set this
                  # however I got choppy sound with some
                  # applications if _not_ setting it
   }
   bindings {
       0 0
       1 1 # bind the first 2 stereo channels - usefull for AC97
   }
}

pcm.duplex
{
   type asym
   playback.pcm "pcmmix"
#   capture.pcm "hw"
# dsnoop allows multiple applications to record sound at the
# same time, but some (e.g. Audacity) have problems with it
 capture.pcm "dsnoop"

}

# Ideally everything should go through dmix, but as dmix
# isn't mmap capable some bad written applications not
# checking for mmap capability may be broken
#pcm.!default {
#   type plug
#   slave.pcm "duplex"
#}

# Now these are for use with the "aoss" OSS->ALSA API wrapper.

#pcm.dsp {
#   type plug
#   slave.pcm "duplex"
#
#}

#pcm.dsp0 {
#   type plug
#   slave.pcm "duplex"
#}
###############################################################

# selezionare "alsa" su
gstreamer-properties

# controllare discordanza su /etc/asound.conf

vi /etc/esound/esd.conf
################################################################
[esd]
auto_spawn=1
spawn_options=-terminate -nobeeps -as 2 -d default
spawn_wait_ms=100
# default options are used in spawned and non-spawned mode
default_options=

/etc/init.d/alsa-utils restart
speaker-test