resource conflict

Hi! I am owning a cpx h500 and I am having problems with my audio. By checking my systeminformation I received an information about a resource conflict. It says, that one IRQ (9) is shared by 6 devices. Two of them are the onboard audio and video-card. Others are the two cardbus-controller,  the pci to usb hostcontroler and a ms-acpi-conform system (what is that?). After googleing through the internet, I found out, that having video and audio one IRQ shared is not really cool. In fact I have some toruble with my audio, every once in a while it sound really bad. Using Winamp, I push pause and everything is good again. Using itunes, the whole systems hangs it self up after a few minutes. I now would like to know if and how I can change the IRQ setting since w2k is not letting me do it (device manager). I am using bios a14 and there seems no option either! Anybody any Idea?