Vista - Typing makes audio crack

Every time I'm listening to music and typing the sound cracks, it's an anoying problem, any idea on how to fix this?

Ive tryed the following:

Disabeling sound effects, reducing the sample rate to 44100 khz, and updating drivers, several players (Itunes, wmp, JetAudio, etc.).

My specs:

Mobo: GA-MA78G-DS3H with realtek 889a integrated sound
Video: GeForce 8600 GT 512mb
Audio: Alc889a
Mem: 4gb 667mhz
CPU: Athlon X2 4000+ (next week it will be a Phenom II 940 ) GW
OS: Vista ultimate x64

Any help it's very appreciated, thx.

well guys, I've found the solution, I simply changed my keyboard, don't know why it was doing that, all I can tell you is that it was a ps2 wireless keyboard, and the new keyboard is wired and it's usb. go figure.

Hi Seintoyo,

As this was a wireless device It could just be a simple case of the radio signal from the keyboard causing interference with the speakers Especially if these have inadequate or no shielding. It would show up when typing as there is a stronger signal when the keyboard is actually sending the keystrokes.

I often get a similar problem with Cell phones

Yes, in this case I'm not shure it was the speakers, I have the logitech x-540 and not eaven cellphones interfer with them, i'm starting to think it could be that my ps2 port has some sort of bug, i'm not shure... however it's worth taking a look into it, i'll see if it happens with headphones on, i'll post a follow up.