issue with directx9?

[lovenara]

i been using lunar fine for 3-4 yrs on my p4 dualcore winXP pro
but few months ago i got interested in gamemaking and dloaded lots of sources.Trying to use them dragged me to install more of drivers,...like microsoft+++,directx9...
I really dont know much about this stuff but now my p4 always has its frozen time like when playing sound from player ,it will stop performing for 1-2 minutes then back to normal again.
I dont know what cause this problem.Anyone experience this?
thnx