I think the first question you should ask, do you have P81's Intrepid installed?
The second question, do I want to invest a lot of effort into something that may mess up my install (untill you fix the resulting BSOD)?
It shouldn't result in a conflict, except that one of the 2 sounds is overriden (whichever comes first is overriden with the second sound).
You would have to change 2 files, the hardpoint (all phaser banks that use that sound), and the sound plugin, which can be in the ship plugin, or in a sound pak file (typo intentional, it's a BCMP thing).