strange sound problem

I have a Sound Blaster Audigy 2 sound card and recently noticed a strange issue. Since I replaced an old hard drive with 2 SATA 250 GB WD hard drives in an array every time there is hard drive activity i hear feedback on my speakers if they are turned up that sounds like static or white noise of some sort. It is very noticeable if i am listening to music and open a program or try to run defrag or any other utility that accesses my hard drive. It is severe during the windows startup screen when booting XP Pro. It seems to only be associated with hard drive activity and doesn't occur if i am just using my web browser, instant messenger, or any other non HD intensive activity. I never had the problem before i replaced my hard drives and am using the same sound card driver I was before (beta audigy driver with open AL support). If anyone could help me out I would greatly appreciate it.

Thanks!

Well that's strange. I uninstalled the beta driver and installed the latest release driver and the problem is better, but still not totally fixed. Now there is only a slight tearing noise that occurs intermittently when there is hard drive activitiy. It is MUCH quieter than it was before but still noticeable.