audio device not working

[maximes74]

hi, ive recently got a new computer and i havnt been able to get the sound working. windows media tells me i dont have a audio device installed or its in use by another preogramme, i dont really have a clue what im doing but i hav downloaded a programme called everest wich tells me my motherboard info and stuff, but i still dont know what im supposed to do. will any1 just help me through geting a new device or driver or whatever i need plz!!!!?

[maximes74]

here is some info about my comp if u willin to help, plzz!! ----
Computer:
Operating System Microsoft Windows XP Professional
OS Service Pack Service Pack 3
DirectX 4.09.00.0904 (DirectX 9.0c)
Computer Name MY-B9A51F8EECE2
User Name User 1

Motherboard:
CPU Type Intel Pentium 4, 3219 MHz (16 x 201)
Motherboard Name Abit VT7 (5 PCI, 1 AGP, 4 DDR DIMM, Audio, LAN)
Motherboard Chipset VIA Apollo PT880
System Memory 1024 MB (DDR SDRAM)
BIOS Type Award (08/27/04)
Communication Port Communications Port (COM1)
Communication Port Printer Port (LPT1)

Display:
Video Adapter Radeon X1950 Pro Secondary (512 MB)
Video Adapter Radeon X1950 Pro (512 MB)
Monitor Plug and Play Monitor [NoDB] (163224040200)

Multimedia:
Audio Adapter VIA AC'97 Enhanced Audio Controller

Storage:
IDE Controller VIA Bus Master IDE Controller - 0571
SCSI/RAID Controller VIA RAID Controller - 3149
Floppy Drive Floppy disk drive
Disk Drive SAMSUNG SP2514N (250 GB, 7200 RPM, Ultra-ATA/133)
Disk Drive IN-WIN iAPP CF USB Device
Disk Drive IN-WIN iAPP MS USB Device
Disk Drive IN-WIN iAPP MMC/SD USB Device
Disk Drive IN-WIN iAPP SM USB Device
Optical Drive Optiarc DVD RW AD-5200A
SMART Hard Disks Status OK

Partitions:
C: (NTFS) 238472 MB (228101 MB free)

Input:
Keyboard Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
Mouse PS/2 Compatible Mouse

Network:
Network Adapter VIA Compatable Fast Ethernet Adapter (192.168.2.6)

Peripherals:
USB1 Controller VIA VT83C572 PCI-USB Controller
USB1 Controller VIA VT83C572 PCI-USB Controller
USB1 Controller VIA VT83C572 PCI-USB Controller
USB1 Controller VIA VT83C572 PCI-USB Controller
USB2 Controller VIA USB 2.0 Enhanced Host Controller
USB Device USB Mass Storage Device