Help with sound

Hi everyone!!

I'm looking for a good sound plugin. My computer is:

P4 1.6
256Mb Ram
Nvidia Gforce 2 Mx 440
Sound Blaster Live! 5.1
Win98 & WinXP

In Win98 it's horrible, sound cuts a lot.
In WinXP not too much, but it cuts.

I'm Using Javo's Direct3D6 1.5 for video
Javo's DirectSound 1.5 for Audio
and Javo's DirectInput7 1.5

What should I do??

Thanks for all.
P.S: Sorry for my poor english.