Speakers pop when launching audio program

Hi there.



Whenever I first launch an audio program such as Itunes, there is one loud pop from my speakers. I know its not the speakers as I have tried different ones and it still happens.



It will only occur the one time either when I launch the program or when I go to play the first track. After this, it is perfectly fine.



Any ideas why this is happening?



My setup is Windows XP with Athlon XP 3200, Nforce motherboard, Echo audiofire 4 soundcard, all drivers are upto date.



Cheers

I've never heard of that brand. It could just be an crappy card, or the drivers are that great..

Thanks for replying...



Card was ?50 quid. If you are into music production you would have heard of it. Very well respected. I suppose the drivers could be a possibility. They are up to date though and I've not heard others report this problem so its unlikely.



Any other ideas?