Since the advent of ACPI, Windows doesn't really let us change the IRQ. You will find places on the web telling how to do that, but be advised that it causes the loss of other things, such as the Windows automatic Shut Down from the Start menu. So I don't recommend doing it that way.

i recommend going inside the box and moving the card to another available PCI slot and then boot up and let ACPI reassign the IRQ, hoping you hit one where the Firewire card is all on its own IRQ. The more open PCI slots you have for this, the more chances of hitting one, as you may have to move it a time or two to find joy.

Almost certainly, this is your problem, something on the Share is likely throwing Interrupts to grab the thing -- and the soundcard's stream is the one that suffers.


--Mac