sound not heard in fedora core 6
 

Hai,
I am using fedora core 6.In that,I play the song using Real Player.songs played but sound not come what is the reason?

The command lsmod list following things,

Module Size Used by
i915 23361 2
drm 72789 3 i915
autofs4 25413 2
hidp 24129 2
rfcomm 46041 0
l2cap 31681 10 hidp,rfcomm
bluetooth 58917 5 hidp,rfcomm,l2cap
sunrpc 158333 1
cpufreq_ondemand 11085 1
dm_mirror 33041 0
dm_multipath 22601 0
dm_mod 61529 2 dm_mirror,dm_multipath
video 21061 0
sbs 20225 0
i2c_ec 9281 1 sbs
button 10961 0
battery 14405 0
asus_acpi 20697 0
ac 9541 0
ipv6 267489 16
parport_pc 31205 0
lp 17033 0
parport 40841 2 parport_pc,lp
joydev 13697 0
snd_intel8x0 36445 1
snd_seq_dummy 8133 0
ipw2200 112037 0
ieee80211 34953 1 ipw2200
sdhci 22617 0
snd_intel8x0m 21325 0
ieee80211_crypt 10433 1 ieee80211
mmc_core 30401 1 sdhci
snd_seq_oss 37185 0
snd_seq_midi_event 11841 1 snd_seq_oss
snd_seq 57137 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_ac97_codec 95073 2 snd_intel8x0,snd_intel8x0m
snd_seq_device 12621 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_ac97_bus 6593 1 snd_ac97_codec
snd_pcm_oss 46561 0
snd_mixer_oss 20545 1 snd_pcm_oss
snd_pcm 80325 4 snd_intel8x0,snd_intel8x0m,snd_ac97_codec,snd_pcm_oss
pcspkr 7361 0
serio_raw 11205 0
i2c_i801 11853 0
snd_timer 27077 2 snd_seq,snd_pcm
i2c_core 25537 2 i2c_ec,i2c_i801
snd 57029 12 snd_intel8x0,snd_intel8x0m,snd_seq_oss,snd_seq,snd_ac97_codec,snd_seq_device,snd_pcm_oss,snd_mixer_o ss,snd_pcm,snd_timer
soundcore 14113 1 snd
snd_page_alloc 14281 3 snd_intel8x0,snd_intel8x0m,snd_pcm
ohci1394 38661 0
ide_cd 42337 2
cdrom 38625 1 ide_cd
ieee1394 301081 1 ohci1394
sky2 44357 0
ext3 135369 1
jbd 63209 1 ext3
ehci_hcd 35533 0
ohci_hcd 25181 0
uhci_hcd 27725 0

I am doing sound test in,

system--->sound card Detection
but sound not come.

In headset also,sound not come.What is the reason?I want to heard
the song both headset and system speaker.How to achive this?
please help me.

Thanks in advance,
Jakuar