Maybe this is a totally normal thing that I am being completely OCD about, but I've noticed in certain games that when the sound is interrupted I sometimes hear a "pop" in the audio. Say for example, in the XBLA game From Dust, if I pause the game during a loud thunder crack or rolling wave, I tend to hear a "pop" as it pauses. In other games, if I cut off a cutscene mid-play by skipping it etc. I'll also get a pop when the sound is interrupted.
Is this normal, or is there something wrong with my speakers? I connect my 360 to a monitor via VGA connection, and then run the audio to my PC speakers.