My computer speakers, if left on for more then 15-20 minutes, they start to make this wierd electrical counding clicking/snapping noise, and it starts just doing it periodically, but then get’s to a point when it is doing it almost constantly. ARG! It only started happening in the last couple days, and I am about ready to throw them out of the window. What could be causing this? 
It depends, you could just have the volume up to loud.
not the case. It does it wheather the volume is high or low or turned all the way down. also, I forgot to mention that if I cut the power to them, they still crackle for about 5 seconds after, getting quieter slowly.
If the speakers have their own power supply (transformer), it ould be going bad. Can you try another one ( same output voltage/wattage)?
as in like a different AC adapter?
Yes. It should be marked with the output voltage and wattage.