I don't know about other people, but depending on the type of music and when it is listened to, I'd say it's actually a sign of intelligence. I'm a fairly smart guy and I listen to music most of my day while I'm working (pausing to chat to colleagues). Personally, I find music engages certain areas of my brain, allowing other aspects to perform better undistracted.
An interesting criteria to the music is it must be instrumental- music with lyrics, or at least, english lyrics, engages the verbal center of my brain, which distracts me from coding, which fits the engaging inactive parts of the brain theory.
An interesting criteria to the music is it must be instrumental- music with lyrics, or at least, english lyrics, engages the verbal center of my brain, which distracts me from coding, which fits the engaging inactive parts of the brain theory.