I'm not too sure what audio card I have, but here is the information from the DXDIAG report about audio cards:
Quote:
-------------
Sound Devices
-------------
Description:
C-Media Wave Device Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_1039&DEV_7012&SUBSYS_A00C1019&REV_A0
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: cmuda.sys
Driver Version: 5.12.0001.0045 (English)
Driver Attributes: Final Debug
WHQL Logo'd: n/a
Date and Size: 6/25/2004 17:13:42, 818816 bytes
Other Files:
Driver Provider: C-Media Inc.
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): Yes
Registry: OK
Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
Description:
C-Media Wave Device Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: cmuda.sys
Driver Version: 5.12.0001.0045 (English)
Driver Attributes: Final Debug
Date and Size: 6/25/2004 17:13:42, 818816 bytes
Cap Flags: 0x0
Format Flags: 0x0
Name:
C-Media AC97 Audio DeviceDevice ID: PCI\VEN_1039&DEV_7012&SUBSYS_A00C1019&REV_A0\3&267A616A&0&17
Driver: C:\WINDOWS\system32\ksuser.dll, 5.03.2600.2180 (English), 8/4/2004 00:56:44, 4096 bytes
Driver: C:\WINDOWS\system32\ksproxy.ax, 5.03.2600.2180 (English), 8/4/2004 00:56:58, 130048 bytes
Driver: C:\WINDOWS\system32\drivers\ks.sys, 5.03.2600.2180 (English), 8/3/2004 23:15:22, 140928 bytes
Driver: C:\WINDOWS\system32\drivers\drmk.sys, 5.01.2600.2180 (English), 8/3/2004 23:08:00, 60288 bytes
Driver: C:\WINDOWS\system32\drivers\portcls.sys, 5.01.2600.2180 (English), 8/3/2004 23:15:50, 145792 bytes
Driver: C:\WINDOWS\system32\drivers\stream.sys, 5.03.2600.2180 (English), 8/3/2004 23:08:04, 48640 bytes
Driver: C:\WINDOWS\system32\wdmaud.drv, 5.01.2600.2180 (English), 8/4/2004 00:56:58, 23552 bytes
Driver: C:\WINDOWS\system32\drivers\cmuda.sys, 5.12.0001.0045 (English), 6/25/2004 17:13:42, 818816 bytes
Driver: C:\WINDOWS\system32\udaprop.dll, 1.00.0002.0002 (English), 4/24/2003 13:29:08, 32768 bytes
Driver: C:\WINDOWS\system32\cmuda.dll, 5.12.0001.0151 (Chinese), 6/24/2004 17:09:28, 155648 bytes
Driver: C:\WINDOWS\system32\cmirmdrv.dll, 2/18/2003 18:26:28, 28672 bytes
Driver: C:\WINDOWS\system32\cmirmdrv.exe, 1.00.0000.0016 (English), 4/23/2004 15:02:10, 233472 bytes
Driver: C:\WINDOWS\system\cmids3d.dll, 1.00.0000.0000 (Chinese), 4/29/2002 15:04:40, 917504 bytes
Driver: C:\WINDOWS\system\cmicnfg.cpl, 1.00.0041.0014 (Chinese), 6/29/2004 10:11:28, 2560000 bytes
Driver: C:\WINDOWS\system\SmWizard.exe, 1.00.0002.0003 (English), 2/17/2004 10:51:56, 1458176 bytes
Driver: C:\WINDOWS\system32\a3d.dll, 4.12.0001.2008 (English), 11/23/2001 12:08:20, 712704 bytes
Driver: C:\WINDOWS\system32\Audio3D.dll, 4.12.0001.2008 (English), 11/23/2001 12:08:20, 712704 bytes
So, I'd imagine that it's "C-Media AC97 Audio Device".
All my drivers are up to date, I can't understand why it would not work, however. Considering Doom 3, and all other games run perfectly.. Is Thief 3 just not very card-friendly, or is there a problem with my actual card, or more likely, drivers?