An interesting itunes/quicktime problem that crashes my PC

[tornadotsunamilife]

I'm using the most up-to-date software versions for both but I've noticed sometimes when I'm listening to itunes and I go to watch a quicktime thing but don't pause itunes I get a high-pitched noise come from the speakers (this continues after closing quicktime) and then if I pause/close itunes my PC crashes which results in a BSOD where I have to turn the PC off at the wall and turn it back on.

I'll try and get the code but anyone got any ideas on this? Sound driver problem maybe?

EDIT caught the code whether it means something god knows: STOP : 0x0000009C (0x00000004, 0x803461F0, 0xB2000000, 0x00070F0F) sounds like something to do with memory?