I can not get sound.

turgay@turgay-S:~$ aplay -l
aplay: device_list:252: ses kartı bulunamadı...
turgay@turgay-S:~$ lspci -k
00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
        Subsystem: ASUSTeK Computer Inc. Device 836d
        Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
        Subsystem: ASUSTeK Computer Inc. Device 836d
        Kernel driver in use: i915
00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)
        Subsystem: ASUSTeK Computer Inc. Device 836d
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
        Subsystem: ASUSTeK Computer Inc. Device 83f2
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)
        Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 01)
        Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard
        Kernel driver in use: uhci_hcd
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard                                                                                                                                       
        Kernel driver in use: uhci_hcd                                                                                                                                                                     
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)                                                                                                                 
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard                                                                                                                                       
        Kernel driver in use: uhci_hcd                                                                                                                                                                     
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)                                                                                                                 
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard                                                                                                                                       
        Kernel driver in use: uhci_hcd                                                                                                                                                                     
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)                                                                                                                   
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard                                                                                                                                       
        Kernel driver in use: ehci-pci                                                                                                                                                                     
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)                                                                                                                                            
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard
        Kernel driver in use: lpc_ich
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard
        Kernel driver in use: ata_piix
00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)
        Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard
        Kernel driver in use: ata_piix
01:00.0 Ethernet controller: Atheros Communications Inc. AR8121/AR8113/AR8114 Gigabit or Fast Ethernet (rev b0)
        Subsystem: ASUSTeK Computer Inc. P5KPL-CM Motherboard
        Kernel driver in use: ATL1E
turgay@turgay-S:~$ uname -a
Linux turgay-S 3.8.0-1-generic #5-Ubuntu SMP Fri Jan 18 15:25:22 UTC 2013 i686 i686 i686 GNU/Linux
turgay@turgay-S:~$