I have vista 32 bit and just installed the xs51 sound card. I can hear the sound effects when I play back but my question is, should I be able to hear the sound effects when speaking into the mic?

I believe that is the Diamond Extreme XS51 sound card.
Try this location for drivers:
https://www.diamondmm.com/product/xs51-diamond-xtremesound-sound-card/

you might have to remove the sound card and make sure the socket is free of dust restart your computer then reinstall it
windows 7 should automatically find the drivers and install them
click start right click on computer select properties in the left hand panel device manager scroll to
sound and video game controllers if you see a yellow qustion/exclamation mark ? ! or a red X
a newe driver will need to be reinstalled
hope this will help

You need to install all the mainboard/chipset/graphic card drivers.
For the mainboard/chipset drivers, please check
http://www.msi.com/product/mb/K8MM-V.html#/?div=Driver

MSI is not prividing the Win7 drivers yet, but you can use the Vista drivers. Select the Vista version (32 bit or 64 bit) to be the same as yout Win7 type (32 or 64 bit)

HERE is the download location.

Release date : 2 Jul 09 This download is a driver providing Microsoft® Windows® 7 and Windows Vista® support for Creative Sound Blaster® Live!® and Audigy® series of audio devices

File Name : SB24_PCDRV_LB_1_04_0090.exe This download is a driver providing Microsoft® Windows® 7 and Windows Vista® support for Creative Sound Blaster® Live!® and Audigy® series of audio devices. For more details, read the rest of this web release note.
This download supports the following audio devices only:

• Sound Blaster Live! 24-bit
• Sound Blaster Audigy Value/SE/LS
• Sound Blaster 5.1 VX

Requirements:

• Microsoft Windows 7 64-bit, Windows 7 32-bit, Windows Vista 64-bit with Service Pack 1 (SP1) or Windows Vista 32-bit with SP1
• Sound Blaster audio devices listed above

Notes:

• This driver is only for the Creative Sound Blaster audio device listed above.
  DO NOT install this driver for other Sound Blaster audio devices.
• To install this driver
  1. Download the file onto your local hard disk.
  2. Close all other Windows applications.
  3. Double-click the downloaded file.
  4. Follow the instructions on the screen.

If you have installed a 32-bit version then download this. If you have installed a 64-bit version then download this.
I also recommend to check for other missing drivers and complete them from here : 32-bit ; 64-bit

It is not design for windows 64 bit, If it works perfectly on windows 32 bit, then it is windows 64 bit.

Try and google using model name found at the back of the computer, and follow the first link given to you. Good luck

throw that in dust bin

is it movie or music?
if it is movie use g-spot to find out which codec is missing

http://www.free-codecs.com/download/GSpot.htm

if it is music check your soundcard and the options in windows media player

CM9880/8CH Azalia Audio CODEC onboard (found on ASUS boards) - basic microsoft UAA function driver installed by Vista works but misses soundinput. Install latest ASUS/C-Media software (set compatibility mode to XP for the installer) > reboot > set multiple streams enabled > switch input from microphone to wave and back > reboot

Creative Audigy (standard) -- No built-in support, but it works with beta drivers from Creative's site.

Creative Audigy 2 ZS Platinum / Pro -- [http://us.creative.com/support/downloads/download.asp?sOSName=Windows+Vista+32-bit&region=1&Product_Name=Audigy+2+ZS+Platinum&Product_ID=9107&modelnumber=&driverlang=1033&OS=26&drivertype=0&Image4.x=38&Image4.y=15 * Creative SoundBlaster Live! Series. Works with special drivers found here http://www.ngohq.com/home.php?page=Files&go=cat&dwn_cat_id=20 (32 Bit)

Creative SounBlaster 2 Platinum Vista beta drivers found on www.creative.com

ECHO AUDIO - INDIGO DJ - OK but with strange routing in virtual outputs

Intel 8x0 AC97 (32 bit)

MSI Neo4 SLI Onboard Sound (CL 7.1) - Version: 5.12.1.506, (32 Bit)

nForce4 sound card - Version: 4.64, (32 Bit)

nForce3 (Realtek ALC850) - drivers obtained from windows update. (32 Bit)

Terratec 5.1 Fun PCI - sound works, controlpanel doesn´t work (32bit)

Terratec DMX 6Fire

SoundMAX Integrated Digital Audio (Tested with ASUS P4S800 Motherboard) - Needs latest drivers available to work correctly, otherwise install chipset drivers for AGP and IDE. Sound may skip and studder if not using the latest driver

anonymoose