Severe sound problem. Please read.

Well as many of you know i just got my knew hard drive. I installed it and was on windows xp and everything was going fine. i install my creative audigy platinum driver and right before it installs it says that there is another audio driver on this comp and having 2 could cause problems. I go on kazaa and dl some songs. some songs work great and then some sound really wierd and then after about 20 secs it turns into this god awful earsplitting noise that makes u want to cut off your ears and eat them. Anyways, it's not good. I got so damn frustrated i reformatted and tryed going to my device manager and uninstalling all the audio things. I did this, installed my soundblaster card and STILL got that message that says theres 2 audio things. all deleting them did was mess up alot of stuff and i finally fixed it all by having it install again when the pc loads up. well went on kazaa and got the same result. if i fix this problem my comp is complete and i will be eternally in debt. THANX!!