These audio samples are standard audio files, which do not require any additional or special audio codes.
The best application to test your sound setup with is the Windows Media Player, as it will use the standard Windows sound setup, which you just verified and adjusted. If the sound problems are present for all applications, there probably is something wrong with the hardware. If sound problems persist, chances are there are problems with the sound settings in the application you are using. With these steps, you have checked and adjusted the sound setup in Windows XP. Especially older games have limited detection of sound cards in respect to resources (IRQ, I/O address range).
Instruction will vary per motherboard, so you need to follow the instructions in your PC or motherboard manual for this.
In all cases, it could be an audio configuration problem, but often it is a driver problem.
If the card is still not detected when you start your PC then continue to step 3.Turn off your PC, unplug the power cord and wait 5 minutes (this will solve the problem in 90% of the cases).If your Sound Blaster is not detected by Windows here are a few things which you can try: